When visiting the USA I turned on the TV just to watch an ad segment (didn't have to wait long) and I agree with the dystopian feel. Medical ads and also the attack ads (political or otherwise). It just made me want to say "piss off ads! promote a product or service but stay the hell away from my personal business". Big vibe of none-of-your-business, but like you say they just get in your face. It feels a little like being at a tourist market.

But I wasn't there to watch TV so I filed it as the next weird cultural artifact where the USA is in fact exactly as advertised worldwide on TV and film instead of made-up by a crazy screenwriter :)