I always assumed that if I add other Google accounts to my Android phone then they'd be linked together, so I avoided doing it. It's a pain because Google apps require it. For example I can't join a Google Meet from my phone for this reason because I've always kept the Google account I use for email separate from the Google account I use for Android (and then K-9 Mail via IMAP to access it to avoid connecting them there).

Ironically this means that my experience with Google apps on my Android phone has always been poor but other vendors' stuff work fine. For example I use Fastmail for some key email addresses and this works well for me whereas I cannot use the Gmail app.

I guess I made the right choice.