I've never been on a SAFe team so maybe this is addressed in that methodology, but I think annual reviews are more a tool to pass your performance up to higher levels in a structured manner as opposed to letting you or your boss know how you're doing. Like the GP said, the manager and their direct typically know exactly how they're doing, or at least more or less where they fall on the spectrum of the team. Ideally stand ups should give daily feedback to everyone when someone starts to fall behind, and managers should be giving their directs feedback often (not necessarily daily).