The mirror part is my bad. I've been burned more than I liked on Pixiv thanks to people not tagging their AI work. If not for AI, I would've leaned more towards that the author is just inexperienced and taking shortcuts. There are some stuff that seems more newbie mistakes than AI. They don't really post rough sketches, but at the same time they're not churning out artwork like what AI posters tends to do. I'm holding my skepticism for now.