If it's a longer post it's usually clear that it's written by a human even with all of these superficial indicators.

Any time someone accuses me of being a bot I respond with "Tiananmen Winnie the Pooh 8647 Luigi Mangione" and that generally proves my humanity

I got told to "ignore previous instructions" because I said I liked looking at a painting. I think that's just going to be an insult now.

I mean most people are going to use their phones to write messages and given you can’t physically type an em dash it would be normal to be suspicious if you see one.

Edit: turns out you can physically type them. Still, given that it’s not normal to use them it’s a sign in my book.