Whenever you see the in page popup “Login to Some Website with Google” that is an iframe back to Google servers. The less Google knows about me, the happier I am.
Is there a reliable mechanism similar to UBlock where I can just block them?
Web search’s have led to “guides” by Google on how to request they stop making it obvious they are tracking you.
Never use an third party account to log in in a service.
With the Portmaster you can block Big Tech completly (Google, Facebook, Amazon, etc), with it these companies not longer exist for you, but the price is that you can’t not longer access to any of their services.