note: I'm not excusing the feature but come on! Have some common sense before visiting a site like that?
The place I hate the popup the most is mobile. It comes up moments (0.5 to 2 seconds) after the site loads (say tripadvisor) which means it's possible accept it by accident as it appears under your finger. Your info is immediately shared so there is no way to recover. You're effed.
I means sure, I hate it on desktop too, but on mobile it's directly on top of the content and so more likely to be accepted by accident. IIRC you can turn this off in your Google account (or maybe only Google Workspace?)
Note that I hate it for other reasons too. There's no reason Apple/Firefox/Microsoft/Meta and any other major id providers couldn't offer this too. But if they did, then you'd see 5 of these show up [Sign in with Google], [Sign in with Apple], [Sign in with Facebook], [Sign in with Microsoft], [Sign in with Firefox]. So in other words, this seems like a tragedy of the commons in progress.
To steelman the feature though, easily sign up and easy login would be super convenient if that's what I wanted. It might be nice for a Web API that made this more privacy focused (or maybe that already exists). But yes, I'd like to see Google's specific popup disappear - be banned.