It’s not just limited to Google; it’s for any site providing only third-party OAuth login. I can never remember which one I signed in with, and if that service ever shuts down, it’ll be a pain to figure which of the hundreds of services I’ve signed up for using that OAuth login. It’s much easier to change an email.
And yes, I do use a paid alternative to Gmail (ProtonMail)
I’m not going to try too hard to convince you of digital privacy, but would you really be fine with me just browsing through your browsing and search history, INCLUDING whatever you do in incognito? I’m sure you’ve made at least one anonymous account before. Why’s that? And what’s right today may not be so right in the future. Are you ok with everybody from your boss to your children knowing everything you’ve ever posted? Shouldn’t we have a right to be forgotten?
> what can we do we live in a society full of internet connected stuff we're going to be monitored no matter what anyways
We live in a democracy, well I assume you do too. Just because it’s the way how things are today doesn’t mean it can’t be changed in the future.
> I don't have anything against them or any other huge IT company if they're doing stuff good for us let it be
I’m not saying they’re not doing great things for the world, but it all comes at a price.
Every non-Google service I log into that allows external auth supports at least Facebook and plain old e-mail in addition to Google. Maybe your experience is different, but I use a lot of very mainstream services both free and paid.
I know people who don't have Google accounts. I only use Gmail as a throwaway address for when I expect spam (e.g. signing up for dodgy-looking web sites). I happily admit I'm a huge fan of Google Maps and would not at all mind paying for it, and I actually do pay for YouTube, but everything else from Google has pretty good alternatives as far as I can see. (And even Maps has acceptable alternatives, it's just that much better.)
AMP is like putting all the non-Gmail mail you receive on your Gmail account into a separate folder, and only including Gmail senders in your Inbox.