Toxic positivity is just a new way of saying it was a "Emperor's new clothes" situation. Everybody could or should have been able to see that the emperor had no clothes but was too scared to speak out. Only somebody not constrained by the system, a naive child in the story or in this case consumers who weren't in the corporate structure, was able to point out the obvious truth.

I still think people are tip-toeing around this a bit though. Suggestions that Concorde failed because the genre isn't popular anymore seem like they're trying to avoid some hard truths in particular. I am uninhibited though so I'll say it. Overwatch has characters people want to fuck or see themselves as, and gamers like that. Concorde has characters designed to make people squirm uncomfortably, daring people to criticize their design so they can be called toxic gamers. The character design is deliberately offensive to gamers, defying them instead of pandering to them.