I use the AI app and don't mind the banner ads or sponsorship stories (as long as they are identified as such).
I do mind the redirect ads, the force click ads, the pop up ads with the tiniest x so you can't close it on the first time. Those are the problems.
Imagine you're driving down a road and a guy with a sandwich board jumps in front of you at a red light. You have to interact with him so he gets out of your way and it's annoying.