Complimenting about Headcanons (disclaimer, I'm not against them at all)

First of all I AM NOT AGAINST HEADCANONS AT ALL, I even consume and make them like most people that likes a media. 

But here's the thing. It irritates me a lot when people try to put their damn headcanons in your head. I think it's kind of because these kind of people get so submerged into it that they start thinking it's canon and I think that's the problem. Again, I do these things, but it passes the line when you start attacking someone because they don't agree with it.

"X character is X thing and it's obvious" Yes, but they didn't mention it canonically so get a life, touch grass and stop attacking people for stupid things like these. 

Same things with ships, you simply can't make people accept a ship as canon because you like it bud, wth.

I forgot what else I had to write, have a good day, luv u, sry for any grammar mistakes