I dont know.
My experience so far was on a Pewdiepie Video. I asked something, and someone answered that i just would be a stupid Brony and that they known for not knowing anything.
But the comment was marked as spam and disliked, so before i even got a chance to respond, the comment was deleted.
Either Pewdiepie did it, or his fans.
And most other so called " Antibronys " i met, are often like : " As long as you arent a rabid Brony, were okay with you . "
I never really got hate. I once got a lot of hate because i defended someone for being a brony, and i got in a discussion with his haters, calling my life worthless, that i would be nothing more like an attention seeker, i would be a pedophile , and so on.
That might sound bad, but i didnt know, that the person i defended, was actually a Troll himself and did many bad things, like insulting others for not liking mlp, and posting comments at disgusting videos on an older channel of him.
I didnt know that, so i just deleted my comments in the discussion and renamed myself, before someone thought i would be part of that.
And now, i mostly ignore all the comment wars on the net, since most of them are trolls either way.