I use youtube across different devices with the same account. sometimes, i even use it in multiple browser profiles or apps on the same device (with the account logged in).
the ad reminder got me. it actually stopped serving any youtube video on my laptop. so i made a new profile in firefox, logged in, and it was fine. for a couple days.
so i made a new profile, logged in, and... was foiled. but not to be deterred, i did what any reasonable person would do: i sought out one of the DOZENS of alternative frontends and used youtube's recommendation algorithm on the main site to pull videos from the alternative frontend.
for one day.
today, on my laptop, with my old profile, never changing logins or browser settings, youtube started working again.
Does Google have no issues with ad blocking as long as you pay for YouTube premium? I have premium because it's included with my YouTube music subscription but I still use uBlock Origin in Firefox. I have never seen any requests for me to disable it while on YouTube or any other Google owned service.
Yeah, both YouTube and the creators get way more money from you paying for premium than even watching hours of ads per day. Google demanding you disable ad block after you paid them would effectively amount to biting the hand that feeds them.