it was funny. and it's a matter of pride that they accused you of being AI.

Maybe, like sarcasm, this kind of joke would be easier to appreciate if tagged somehow.

I think everyone agrees the internet is drowning in AI slop. That makes the joke hard to appreciate on its own.

They were impersonating an AI. You wouldn't complain that a comic started impersonating a celebrity without saying "I'm going to impersonate X now" first.

I don't think that's their point. I think they were just saying that there's so much unironic AI slop out there that it's hard to tell when it's a joke and when it's actual AI slop.