@peter I'm not actually sure if this is a privacy win at all. I use Google for years with disabled history (and other stuff disabled) and this new change does not make any difference to my privacy. At the moment, still, the home feed recommendations is mostly about videos from my subscriptions, past videos and the newest one. All it does is take away that view, which does not improve privacy. What actually improves privacy is to disable the history, which you could do since years.
Edit: I totally forgot the link I wanted to provide: https://myaccount.google.com/u/0/yourdata/youtube