Forcing users to stop using passwords without supplying a more secure alternative for logging in (like key + super strong password). A service that plans to stop working despite protests from the users cannot be trusted. They deliberatelly lose income from Github only to stop the development of open source alternatives and make the profit in Microsoft. Everything Microsoft touches turns into absolute crap, just like when they bought Skype and began running ads for illegal drugs, and when LinkedIn turned into a pay-to-win pyramid scam. Everyone has to look for an alternative Git hosting now.