Google does not change YouTube recommendations based on your IP, it's entirely based on cookies, they have no way to tell how many people are behind the NAT. Try going to YouTube in private mode. Personally I always use YouTube this way to avoid being pigeonholed. EDIT: I've exceeded my post quota for today so here's my reply: That's interesting. I've moved ~4 times and have used different ISPs since I started this h…
It's possible my viewing habits overlap with say 68% of others. But I've seen recommendations that match what I would assume to be my more niche interests. As for not closing all private browsing tabs, I've made that mistake before, but I still see the same pattern of recommendations when using single session browsers or separate devices.
Thanks again for the follow-up.