I actually don’t think they are pure chatGPT, even though certain bits sound a little chatGPTish. The paragraph style is all over the place, but chatGPT provides really nice consistent paragraph breaks. The force level in some of them also is beyond what chatGPT typically allows.
They may be partially written, then heavily edited, that or people are just beginning to read enough chatGPT that it has begun to alter the way they write. Kind of like humans are picking up a tech accent.