Most people are not that good at spotting those tells, and when looking at a poster they will not be thinking about whether its is AI or not. If its not obviously AI they are not going to even think about it.
And also it's not like I'm saying I love all the man-made posters. Or that I never been "fooled" by gen AI content.
It's just that as soon as I start seeing some gen AI tells on an image, I can't unsee them and I feel disgusted by it.
That's the problem.