User blog comment:Ygrain/The Reject ending: why only half-done?/@comment-108.48.15.158-20120627191602

The Reject ending isn't an ending- it's really more of a passive-aggressive way for Bioware to insult the angry fans who didn't want to choose any of the Catalyst's options. If you think of it that way, it makes more sense (while also making the writers seem hopelessly immature).