Use Fastmail. It's not free, but that's okay to be because it means their business model is fundamentally different.

I only watch logged out anyways. If you don't install other extensions (DF Youtube was the one I had that caused ad blocking to be detected) and stay with uBlock origin and sponsorblock, it won't be detected. It's a huge time sink anyways. I'd suspect most people would be better off without watching Youtube logged in.

I don't browse the web while logged in. Never trusted them with my browsing history.

You think their data matching capabilities wouldn’t make that link?

Make a new account.