User blog comment:Chaosian/Poll Results 26 - Were you disapointed at all that the secondary "enlightened" ending of Metro 2033 was non-canonical?/@comment-4076387-20120322142303/@comment-4488593-20120323141857

It's primary purpose was to get players to explore, one of the core elements of Metro 2033, there was never a chance of it being canon. I'm hoping they provide another double ending in Last Light.