>Awaiting their “premium cannot be shared with people outside household” policy so I can finally cancel.

Then I have good news for you! https://lifehacker.com/tech/youtube-family-premium-crackdown

In fact, I've got an email from them about this already. My YT is still ad-free though, so not sure when it's going to kick in for real.

Ya I got this message when I was on vacation for a week. Seems a little messy on their part.