It's no longer "just an opinion" when it's hateful just for hateful's sake. You don't have to agree, but you can't really disagree with someone's harmless existence, can ya?
The rainbow community has never done you any wrong. Meanwhile, hetero people's---
Imagine I made an anti-hetero meme about how boring they are.
I guess you'd upvote it because 'hate is always funny', right?