What is your problem with that? They don't request any unreasonable personal information/permissions, if I recall correctly they only use minimal info only: the

What is your problem with that? They don't request any unreasonable personal information/permissions, if I recall correctly they only use minimal info only: the unique user identifier (email address), and name. They don't need to work with transactional emails, password resets, etc. Lots of failure modes and corner cases to support, for a minority. Lot of work and inconveniences saved for a free project that surely takes some effort to organize every year.