Where I live, it's been nothing but the same negative political attack ads for the last 4+ months. It's gotten to the point that I want to NOT vote for any of these people because I've heard the same ad from them 50+ times to the point of annoyance.
Google, is of course happy to take your ad dollars and let you alienate your potential customers all day long, which is a broken model in and of itself.
Nobody would think it was a good idea for a company to buy EVERY ad block during an NFL game and run the same ad in each, but that's exactly what is happening with targeted ads on youtube now.
In theory, with appropriate targeting, I should see stuff that I'm actually interested in, or care about. If anyone can do that, it would be google. Issue is, they leave it up to the advertiser and in most cases it would seem that the entities running the campaigns are not competent.