It's expensive when the alternative is free. Particularly since that free alternative is WAY better. Paying youtube only stops the ads on youtube. uBlock Origin does much much more than that. I'd sooner give gorhill 12/month, but he won't take my money.
This stuff adds up fast. $10/mo for YT Premium, $15/mo for Spotify, $15+/mo for Netflix. You are looking at almost $500 per year in subscription services alone, not even counting your phone bill.