The team actually has a lot of pedigree, and at the time he purchased the company, these types of games were all the rage. I don't think, given the information he had available when he took over, it would have been possible to foresee the game losing them 400m dollars, butterfly effect and "the professor" is late for the job interview or the DEI team miss the train, and this could have turned out very successful.
The other thing to consider is that they knew this game would flop weeks before release, they had the beta numbers, they had the pre-order numbers, they had mock-reviews written telling them what many of the final reviews said. Just because he was publicly supporting the game up until the moment it was pulled from sale, doesn't indicate he's an idiot, who was taken by surprise at this. Behind the scenes he could very well have seen this coming, even before the big reveal, and already prepared the exec team for the worst case scenario. I doubt he knew it would be worse than the worse case scenario, but I don't think he's stupid enough to have believe his own public rhetoric. I suspect the plan was to show support for the game and pray it's not a completely failure, as they had already spent what, 300+ million on it at that point? so what else can you do.
The only thing we can fairly judge him on is how he deals with this situation now, he should lay a lot of the team off, and course adjust on other titles in development to ensure they have appealing character designs (even if that means catering to the "male gaze") and put gameplay before politics and avoid any mention of genders or pronouns in reveals and previews.