Same experience, it's not clear if it's just one advertiser blowing a lot of cash at once, or Google deciding I really need whatever product, but man oh man when I hit one of those ad loops it puts me off of that product forever.

The most recent was Grammarly, for about a month straight 80% of the video ads Youtube showed me were the same two Grammarly ads going back and forth. I'm not sure why Google decided that I really need to fix my grammar... but I know sure as shit I'll never have anything to do with Grammarly, ever.