So, is the opinion that he just fabricated the photo, or that he had a knack for figuring these glitches out? Because as far as I know, glitching things is considered all well and good with speed runners, and lots of his other high scores imply some kind of glitching or another.
This is the current state of the world. 10 years or so ago and before, there was a much stronger presumption of glitchlessness. Though you'd still encounter the problem that rigorously defining "glitch" can be quite challenging.