If you are not logged in to YouTube you get generic crappy recommendations, why not this for someone without history turned on?

I use the YouTube recommender extensively and understand the issues about getting increasing crap in recs. I really have no interest in fake science crap or conspiracy theory crap! So I aggressively "do not like" videos or channels that turn up with this junk. I'm not sure I could use YouTube without the recommender and would not use it if I got constant crap. The "do not like" tells the recommender not to send that particular type of crap and though more crap will inevitably drift in, the result is a pretty useful feature.