Things are easier to validate in person so there's a sense you understand the context. If you go to a painting club because you want to learn how to paint better, and someone or someone(s) show up with photography instead. You don't hate photographers you're just there to do a specific thing. Or say a club that uses traditional woodworking tools. You may not hate power tools or the people who use them, but they're not invited to the club.
I wonder if all the noise is around a need for better tools. Some level of consternation is good to signal that there is a problem in need of a solution. Hopefully there are solutions to this that aren't too invasive, but I think the counter-argument that it's wrong to have a like preference for human generated content is like - I think it should be ok to want to try and specifically define what a community is for.
With that said though, I won’t order food off a delivery app if I see even a single AI-generated food image.