You know what’s cool about headcanons? They can be a way of re-contextualizing a character’s thoughts, behavior, and words. They can be a form of interpretation and they’re fun to partake in. 

Headcanons aren’t fact. They’re not canon. They can be based on stuff from the canon work, but just because one person has one headcanon doesn’t mean another can’t have a contradictory headcanon. 

So, for example, if I headcanon a character as aromantic and I have reasons given the text (and my own personal experience) my headcanon isn’t lesser than anyone else’s. We can all have headcanons that coexist, even if they don’t gel together. My interpretation isn’t “surface level” just because I don’t agree with the majority interpretation and headcanoning of the character. 

And that’s a good thing.