Disability / non-het / nonbinary / etc headcanons don’t hurt anybody.
I get real tired of seeing people write long rants against headcanons. Add more eyeroll factor if they claim that they’re nonbinary / disabled / non-het / etc as if that gives them some authority on the matter.
The only time a headcanon gets annoying is if the person with the headcanon starts flaming everyone for daring to not portray the character according to their headcanon.
Somebody posting detailed information about their headcanon by pointing out stuff they see in the canon material isn’t going to hurt anybody. Hell, sometimes other people may have a similar headcanon and were too afraid to share until they saw somebody else share first. Then they jump in with omg omg me too! (I LOVE seeing long posts on my dash where people are discussing a headcanon, it doesn’t matter what the fandom is, I can feel their excitement about it! :))
So… as an autistic person, I’ll make examples using autistic headcanons.
An autistic person saying “Drax is autistic!” and writing Drax-centric fanfics from an autistic perspective hurts nobody.
Somebody saying “Drax is autistic, how dare you not write him that way in your fic!” is wrong.
Somebody tweeting Dave Bautista saying “Drax is autistic, start acting more autistic in Guardians of the Galaxy!” is wrong.
Somebody saying “Anyone who headcanons Drax as autistic is a douchebag special snowflake and they’re hurting real autistic people” is wrong, too.
Sometimes headcanons are the only representation people have because the media is absolute shit at portraying some issues in an accurate non-offensive light.
White, cis, heterosexual and non-disabled is often the majority.
Pretend that status quo is a giant bucket of movie popcorn full to overflowing. It’s not going to do much if somebody swipes a handful.
Now, someone under-represented may be sitting next to popcorn person with a handful of Skittles.
Telling somebody they’re doing something harmful by having a headcanon is you, popcorn person, taking that handful of Skittles and leaving Skittles person with nothing.
If you yourself are disabled, trans or non-het and knock down headcanons, you’re taking the Skittles person’s handful and giving them to the popcorn person.
Who’s doing the harm here?
(Hint: Not the Skittles person with the headcanon.)