I think you nailed it, but I would add he is actually self-aware of this, but keeps it up to promote his "image". I mean, he LITERALLY blamed the controller, lol. If he isn't doing this intentionally, at least a little bit, then all I have to say is "dayum, lol".It's sad but clear as day what happened to him.
- To begin with, he was willfully not engaging with the game the way it's meant to be played by going out of his way to not utilizing 360 free aiming.
- He was embarrassed to for whatever reason get stuck in the game during a stream, probably doubly embarrassed that he got stuck on a part that no one else thought twice about.
- Once his ego got tangled up in it he had a rather extreme kneejerk reaction swearing on his pride as a former game maker that it was the game's fault and that the game and its designers suck.
- Predictably this made people tease him.
- He got more embarrassed and tried to double down, but because his position didn't have a good foundation to begin with, his arguments are shaky and he's forced to strawman the logical arguments presented to him, if not outright ignore them. Admittedly some of the arguments thrown his way were not good, such as "if you played other Metroid games you would know", but there was no shortage of arguments based in sound game design either.
- He steps away from the arguments and unfortunately does not take time to reflect, instead tripling down incoherently lashing out further on twitter at the expense of his dignity.
At this point his heels are probably dug in irreversibly.