Competing access needs is definitely a thing, but there is still value in such communities.

Namely, all moral progress was made by discussing things by people talking about things others found difficult and upsetting.

from the warm feelings that made you moral to begin

I don't think my warm feelings made me moral. I think I have warm feelings about stuff I was socialized to see as moral. If I grew up in a up another time or place I would probable just consider myself just as moral as I do now, yet I would likely hold views that today would be considered bigoted.

Similarly I don't think there's anything special about myself today. If in the 1800s I likely would have been homophobic and consider it right, then today I am likely something else that I am wrong about. By the nature of the position I don't know what but I do believe it is more likely to be found in places that tolerates the discussion of the edgy and abhorrent, the same way, I as your average 1800s white man would have found giving women the vote edgy and homosexuality abhorrent.

I do agree that means there is going to be pollution but I don't think it is possible get to what is right with out digging through it.

where everyone's surrounded by opinions they hate and having to work hard to not scream at everyone....you'd say that this is my own bias

Yes, I don't think that is everyone's experience in the CW threads. If you read Scotts post on it you can see that a lot of people found value in it. Did others certainly find it a toxic experience, absolutely! However the great thing about its it was not a discussion forced on others.