I might be missing the point here, but I find it quite annoying that I was already logged into my Google account and trying to sign in in a website[1] using the 'Sign in with Google' did not work. I don't take my cellphone to work and that little Google auth system kept asking for in-phone confirmation since "I was trying to log in from an unknown device" but singing in Gmail in that exact same device worked just fine.

[1] Figma