> obvious signs of AI speak like emdashes

Some of us were trained/self taught to write that way. Even "it's not X, it's Y" is a legitimate and subjectively effective communication tool, and there are those of us who either by training modeling have picked it up as a habit. It's not Ai that started this, Ai learned it from us.

Crap - I just did it, didn't I? Awww double crap! Did it again...

Forums and comments are not written as formal novels or text. Corporate-speak is also not typically used in these environments unless you are representing corporate.

So I think it's fine to scrutinize commenters who write that way.

Besides, the biggest offense of AI speak is making everything seem like a grand epiphany and revolutionary discovery. Aka engagement bait.