I think that that bot might actually be preventing the AITA community from growing. Yeah, it's easy enough to block the bot. I don't disagree with that at all.

The majority of new users may look at the community and see nothing but bot posts. I don't know about you, but if all I see on a community are bot posts, I tend to skip that community. I don't always care to go digging through numerous posts to see if it's worth it to block a bot. Doubly so, if there is so much bot posting that the normal posts are practically hidden. A new user may just assume that the community is intended for bots and just skip it altogether.

I don't care about AITA anymore to be honest, but too many bot posts can definitely hinder the growth of a community. I think that would be true for many communities.

Imo, it's a touch worse when the community is based on personal stories. No one will really benefit from voting/discussing. Instead, you're reading posts that someone else intended for another group on another website. There isn't really a lot of "community" that you can get with that. Short story readers group, I guess? The actual OP certainly won't get any of the input.