Honestly this is one of the biggest issues with it all that you don't really see talked about much

Artists sink a load of time into a piece of art they are proud of, and because AI has got to the point now it's not always obvious at first glance to average Joe, so people rely on heuristics to spot it instead.

For this artist apparently it's "yellows"

For anyone who takes photos (or even video now) even half seriously, photos with Bokeh and good lighting get called out now

You like making instrumental electronic or sampled music? Get ready for everything to be called AI

Even writing: I always used to like using em dashes—they're a pretty versatile piece of punctuation for any casual speech style of writing. If you use an em dash now though, someone just assumes the text is AI. So I've generally just stopped; not because I want to, because AI and people (somewhat understandably) not having a better way to identify AI writing.

Hell, I made an excel sheet the other day to work some stuff out and someone asked how I got the AI to do it.....

Now I'm not saying it's everyone, but I'm seeing a group of people forming, who basically say anything they can't immediately understand how to do themselves must be AI. I have a suspicion it's the same demographic that would say "well I could do that" in a modern art museum or "all they do is press play" when looking at any kind of electronic music production.