Bad headline but reasonable argument within. Concord probably failed for the reasons people outlined, sure.
The point is that peoples fingers aren’t quite as on the pulse of what will make something successful as what we give ourselves credit for. We attribute reasons for something’s success or failure after the fact.
Personally, I don’t know what makes a hero shooter successful or not. A game like this could be going gangbusters for some reason in 6 months time and I would probably not understand why. I say that as someone who’s been an avid gamer over the last 30 years.