Not really. There is absolutely no reason for a game, or pretty much any other kind of software, apart from maybe an operating system, to have full access to yo

Not really. There is absolutely no reason for a game, or pretty much any other kind of software, apart from maybe an operating system, to have full access to your Google account. It adds a new single point of failure for everything somewhere you have no control over – I don't think "huge security risk" is unnecessary editorial in this case.