It's just the way it is, making a thread about it sadly won't make any difference. It's part of a much bigger, omnipresent problem on the internet.
If you're a new member, some users will refuse to interact with you and ignore your quotes because they only value well-known members.
You make a dark humor joke, you get shat on and permanently ignored by a weirdo taking advantage of the like system in threads you post in to show you how much they resent you.
You say a character has a relative AP issue against his opponents, you get shat on by fanatics who can't argue properly.
You publicly defend someone for doing the right thing, that someone starts treating you badly because you supposedly snitched on them or whatever.
Not to mention vengeful members going as far as spreading lies in private conversations to make people you get along with suddenly turn on you.
Etc.
And you know what you should do about such things? Nothing, just ignore it and move on. Someone trying to force their views on others is pretty far down on the list of fucked up things you gotta deal with on the internet and if that's all it takes to affect you, you won't last long before deciding you had enough and leaving.
Some people are gonna go crazy and be excessively resentful for the most trivial things because they're socially challenged, which is the real issue. Obviously not everyone is like that, there's a lot of decent people, but toxic members is the kind of thing you have to accept dealing with regularly on anime forums because it's the kind of place that attracts those socially challenged people like bees to a honeypot. It's their one window to life in society.
It's not an issue you can expect to make go away by being all sunshine and rainbows, but you can't let that affect your own behavior and drag you down. At the end of the day, you can't control people's actions, you're only responsible for how you choose to respond to those things.