Because accounts in Google ecosystem is such a mess, no one understands how they work. This isn't helped by all the systems they acquired and bolted on, and by

Because accounts in Google ecosystem is such a mess, no one understands how they work. This isn't helped by all the systems they acquired and bolted on, and by various teams coming up with their own login flows. Just an example of the mess: https://grumpy.website/post/0PU1U2r3v https://grumpy.website/post/0PU1U2r3v