"don't post links to pirate sites" as a security through obscurity strategy seems... weak. if a pirate site is so obscure that almost nobody can find it, it's also essentially pointless.
but yes, if a pirate site is common knowledge, the feds will be working on destroying it. so the idea is i assume to achieve an intermediate level of obscurity, where you have to have a certain amount of talent for asking the right people or searching the right things to find it. but... whatever capacity for research you are asking people to have on that front, the feds are equally capable of it, and they have a whole lot more time on their hands for tracking down pirate sites! security through obscurity is a losing game for piracy. the perfect sweet spot where people can find your pirate resource but the feds cannot is something of a mirage.
the current piracy system involves a few different tiers of accessibility, and various components that are more or less decentralised.
torrents are the most resilient tech because to stamp out a torrent (with DHT enabled) you have to suppress every seed. so, you have big public torrent trackers like TPB; these are well known and rely on hopping domains and redundancy for security. the ratio of seeds to leeches tends to be low, but the number of users is large enough that there will be at least a few seeds out there for most stuff. torrent clients have gotten a lot better at seeding strategies that take into account your seed ratio and what's currently available in the swarm, so if you just leave everything on seed and open your torrent client fairly often (use a VPN though lol), you don't really need to think about it.
then you have private trackers; these operate on an invite basis. the problem with this is that when the pool of users is so small, the odds of a given seed being online are also small. to prevent torrents dying, they gamify it: you get points for seeding and if you don't have enough points you can't download anything until you seed more. to help people get back in the game there will be 'freeleech' events. being active on a private tracker takes a bit of work.
and of course you have to get in in the first place, which tends to require a proven track record of seeding on other private trackers, and some kind of interview with the operators. getting involved in private trackers is a much bigger ask, you have to figure out where to get your foot in the door, and work your way up to the more insular trackers. it's like a mini subculture. it's valuable, but not scalable.
at the top level of inaccessibility is the warez scene. this is a whole subject that i'm not even gonna get into, go read wikipedia. historically this is where the files actually come from, before getting distributed on public trackers, usenet etc. but good luck getting in there lmao, they are understandably quite paranoid.
of course, for stuff to get on pirate sites you need somebody to go the effort of ripping and encoding it. this is where a major point of failure exists. when RarBG went down recently, the biggest loss was not the existing archive of torrent links, which can be backed up - it was that they were very active at converting scene releases into torrents with a decent balance of file size and quality, which then filter out into the various public trackers. that is much harder to replace! but what killed RarBG wasn't even suppression by authorities - according to their statement, it was a bunch of the admins getting covid or dying or fighting in the Russia-Ukraine war, which made the whole operation impossible to continue. so despite the thousands of people who download RarBG torrents, this single point of failure was overstressed and broke.
as far as the ethics of spreading links to pirate sites go... if it's something like a mega drive, yeah, the chances of a takedown are pretty high if it gets noticed! no question. but those things are by nature short-lived; if you want to use that for archival you're building on sand. there's also databases like emuparadise, but there was no saving that through obscurity, it just took Nintendo a minute to bring the case.
in this kind of centralised case, the clock is ticking from day 1. what we want is to maximise the number of people who are able to save copies while it's up, and then some of those people can put it up again somewhere else and keep the authorities playing whack-a-mole. (for a small collection of files, a sensible measure would be to make a torrent and a mega drive side by side, so that people can download the mega drive and then add the torrent to their client to seed if it gets nuked.)
as for torrent sites, the thing is that torrents rely for effectiveness on a swarm that is either very large or very responsible about seeding. if it's a public tracker, it has to be well known or it's pointless. instead of security through obscurity, the form of security for these sites is try to make the resource itself hard to take down - operating the tracker/archive in countries that don't have copyright treaties, maintaining mirrors, and of course distributing as many seeds as possible so the torrent can stay alive even if the site goes down.
the major problem with a dead torrent site is discoverability. if it's harder to find the torrent, fewer people will download it, the existing seeds will gradually go offline, and of course you can't download a torrent that you don't know exists. and while you could imagine a system of broadcasting metadata about a torrent (title, encoding etc.) in a DHT-like way but that would be so vulnerable to fakes and spam. maybe some kind of cryptographically signed 'this torrent is good' declaration is possible? I know certain torrent clients tout discovery features, but honestly I don't know how well they work. I'm sure there are projects that are way ahead of the game than me on this question.
but yeah anyway trying to browbeat people into not sharing links to pirate media is 1. futile, by the time you see it the cat is out of the bag 2. not a sustainable strategy for security. if you wanna lecture people, 'use a VPN and seed your torrents' is evergreen ;p
