That's great for you, but is a tiny fraction of the problem being outlined. If you could say "Don't show me ads for this again", and total ads were held constan

That's great for you, but is a tiny fraction of the problem being outlined. If you could say "Don't show me ads for this again", and total ads were held constant, you would not suddenly be inundated with ads you enjoy seeing. Ads are unpleasant, period. Targeted ads are no better.