> You have to be deeply ensconced inside an impenetrable bubble to do that to yourself.

I largely agree with your point, but I’m afraid you are the one in the bubble. Detecting AI writing is a rare skill, not the norm. It’s glaringly obvious to those of us who use AI a lot, but it’s not that obvious to the average person.

To the point of absurdity in cases – I’ve seen loads of people who hate AI complain about AI online, not realising that the account they are talking to is nothing but a simple spam bot.