They had Kevin Saunders (who is a competent project manager who knows how to work within temporal and financial constraints - see MOTB) and they let him go. Irrational upper management (Fargo) decision to turn the PC game into a console game in the middle of development was probably the key factor, but we must not disregard that primadonnas like McComb probably don't take kindly to being ordered around and are running to daddy Fargo for protectiion every time they hear something resembling an order.
lol what a pile of Codex wishful thinking
It's always nice to get a "citation needed" rating from an official Codex purveyor of speculation, who has an ample history of being indiscriminate with respect to the truth and falsehood of the articles he posts. You deserve the participation award for trying to goad Kevin to comment on his departure, but that would really be wishful thinking, I'm afraid.
1: Saunders' role on MOTB was formally lead designer, but effectively his job description was the one of a project manager
2: MOTB had a limited budget and development time
3: MOTB turned out to be a very good game in design and execution and is probably the best polished Obsidian title (when it comes to bugs)
1+2+3 -> 4: Saunders is a competent project manager who knows how to work within temporal and financial constraints.
5: Torment was planned and designed to be a PC game and was pitched as such
6: In the middle of development, Torment was changed to accommodate a console version
7: Dramatically changing a project in the middle of development incurs huge costs and results in an incoherent product
8: Consolization of Torment was ordered by Fargo
5+6+7 + 8 -> 9: Fargo's decision to turn Torment into a console game was irrational
10: Saunders was let go from Inxile in the middle of TTON development
11: Saunders' departure coincided temporally with the consolization of TTON
12: Colin Mccomb says things like "I can have (and enjoy having!) reasonable and productive discussions with real conservatives - but not with the modern Republican party." on his twitter, i.e. he can have "reasonable and productive discussions" with people, except when they disagree with his views.
11+12 -> 13: Colin Mccomb is a primadonna of a nu-male variety.
14: Primadonnas, especially those of the nu-male variety, don't like to be ordered around and easily become "offended" by it
15: When faced with what they perceive as offensive from someone with authority over them, primadonnas often go straight to the top to whine and complain
All of that justifies the lighthearted speculation laid out in the post you quoted.