My assessment remains that some people are so deeply in denial as to failure of Bioware and/or the criminally disappointing ending to such a beloved trilogy, that it's the only way to rationalise. They've yet to move past that stage of the grieving process. It's pretty clear to see why disagreement has become acrimonious though as both sides believe they're right and the other side is crazy for disagreeing. Hence why even after the extended cut came out people are STILL insisting it's real and somehow, the extended cut proves that. There's nothing wrong with head canon but I feel that the extended cut pretty much kills indoctrination theory dead, especially with the refusal and synthesis endings... Are we supposed to believe that the Reapers have nothing better to do with Shepard than have lengthy epilogues? Especially one where he fails and dooms THE ENTIRE GALAXY - at least until the next cycle. But the human mind isn't rational.