Yeah, and I believe certain content is behind a linked credit card to verify age now. I've tried degoogling if you will for a long time. Recently stopped using Gmail, and got a custom OS on the phone that gets rid of Google apps. However, I still somewhat rely on Google with Amazon, and its almost completely impossible to avoid them these days, since most websites go through them with Google analytics etc.
Maybe this is true and many websites indeed use g-anal-ytics a lot, but we don't need to help them more with using their services like most of the people.
You can even watch youtube with other frontend like Invidious just fine, even have your own separate subscriptions and notifications not connected to youtube.
For smartphones you can probably use Aurora store instead of G-store and install Newpipe app instead of Youtube.
This is how I ''subscribed'' to BitcoinTalk Show channel:


PS
I don't know if anyone saw, but Bitcoin Magazine youtube channel with over 60k followers recently got banned during live stream after many years of educating content....
so it might be a good idea to multistream BitcoinTalk Show on other platforms in the same time.
Channel got restored after many complains of people, but still...
https://bitcoinmagazine.com/business/youtube-bans-bitcoin-magazines-60k-follower-channel