Back when I had an iPhone 6, visiting Fandom sites was completely unusable because it had ads that automatically spammed the app store open. I had to be fast just to close the tab or the app store would get forced open again, regardless of whether I did anything or not.

I needed the info on the wiki page I was using though, and got around the issue by disabling the app store through parental controls.

Apple allowing that app store opening nonsense single-handedly made my decision to go to Android.