Yeah, Google's lack of support is notorious at this point. It's why just about any YouTuber who gets their account hacked is reduced to begging for help on Twitter, since there seems to be no-one at the company able to help directly if contacted from the site itself.
Does make me think that there should be regulations about support to prevent this sort of thing though. Maybe at the very least there should be a mandated reason for banning/deleting an account and an appeal process with an actual person on the other end. Yes people might use it to figure out how to 'abuse' the system. But that's life. We don't hide the laws so the only way people know what's legal and what isn't is to get arrested for breaking them.
I do wonder what the solution to number 3 is though. Feels like an issue with services using Google login, not Google itself. If you registered with an email and that domain expired, someone could also reset the password for much the same effect. Short of Slack and the like asking you some sort of security question upon logging in each time, I'm not sure what a good solution would be to fix this sort of flaw.
