Ad's are an annoying part of the internet and life. I'd expected an answer similar to yours.
Google seem to want to control everything, and make it difficult to use the internet without some form of control.
I always click on the "report ad" box in the ad and fill in one of the choices to report to Google. It makes no difference if I say I've no interest in the ad or I've seen it many times or whatever. the next time I bring up Planefinder the same ad is there, although they say " We'll try not to show that ad again". Not exclusive to Planefinder of course. So now I use an ad' blocker in my browser. So it rather defeats the object.
If I'm not interested within 20 seconds, any extra time is not going to make me any more interested is it?