Not playing is even worse, I used to live near a less financially developed area of the city and youtube would promote dreadful videos either musically or societally if not logged in.

I did it for a couple of weeks to see what was being promoted by youtube algorithms in terms of content and ads to the more financially challenged parts of the society. Gangsta and sexually inuendo videos in neighbourhoods that although poor do not have a crime problem and young people don't dress like that. But it seems the algo is working on it. Note: This is in a European country