Remember the purpose of ads is to advertise a product that might potentially sell. Quality control isn't always a priority it's capitalism after all. At the end of the day, if you just want to block ads, just block ads.
there are products that I would buy if I would know they exist but I don't because they don't have enough money to do advertisment. It's inherently an unfair competition. The only ads that I would like to see is a tematical search for all of the buyable products and services.