Late October 2023 YouTube Unfucker
First off, here's the typical code - it still works:
youtube.com##+js(set, yt.config_.openPopupConfig.supportedPopups.adBlockMessageViewModel, false)
youtube.com##+js(set, Object.prototype.adBlocksFound, 0)
youtube.com##+js(set, ytplayer.config.args.raw_player_response.adPlacements, [])
youtube.com##+js(set, Object.prototype.hasAllowedInstreamAd, true)
www.youtube.com##ytd-enforcement-message-view-model
www.youtube.com##tp-yt-iron-overlay-backdrop
The most important parts are the last two lines.
Second, have you been locked out of videos? Did YouTube give you this window:
and then replace your videos with a black rectangle?
Step 1: Disable pop-ups with the uBlock Origin menu - this will remove the black rectangle. Your videos will be revealed as unplayable 0 second videos - this can be fixed with
Step 2: Someone in a Discord I'm in dropped the simple hotfix of clearing your cache and deleting your YouTube and Google cookies - et voila, your videos work again!
While I don't know if it'll help, I would also recommend disabling your Watch History. Definite thing to do: DO NOT STACK AD BLOCKERS.
While uBO devs have to constantly reprogram their intended fix as YouTube updates to fight them 2+ times daily, they were absolutely correct in that using ad blockers on top of uBlock Origin actually helps YouTube detect them - it's safer and easier with just uBO at the moment.
Whenever uBO's intended fixes stop working (every day, for multiple hours a day), you'll find that your videos will randomly freeze despite these settings, and you'll be unable to scroll. For some reason, making the video fullscreen disables YT's javascript, and allows you to watch the video and scroll normally again.