What Has Happened to Twitter?

Answer: They hired a "ruthless" product manager, who believes in things like "we should do things that are good for Twitter, but not necessarily good for the world", and probably wants to be remembered as the PM who took the route that no one was willing to take. (S)he has the data to backup these decisions, like some analytics dashboard that shows very many unauthenticated users browsing twitter. Also wears a tough face in meetings.

/s