As the owner of a publisher (board games, but still), its amazing how much behind the scenes stuff can go wrong. Usually the smaller party (designer) is the one that crows the loudest to sources.
It behooves MS in absolutely no way to shit talk a designer, but the designer needs to get it out there that it was not their fault so that future partners are not scared off.
We'll never know what exactly happened here and where blame lies. I've had designers publicly announce changes to a game weeks before it went to release, and then publicly blame me for the games failings in forums. I read it, I know the story is far more complicated, and I said absolutely nothing. Because it benefits me in no way at all to get into the weeds.
But Platinum sounds a lot like Chip Kelly after he got fired.:
http://deadspin.com/chip-kelly-is-playing-the-game-1790708785
In the case of this product, my guess is the budget creep was not going to align with sales expectations. It was a red meat announcement at a time that MS needed to win back the core gamers trust. It didn't work beyond some hooting and hollering at E3, it was clear based on sales of other red meat titles (ReCore) that this strategy was a money losing gambit that was not getting them the gamers they wanted to grab. Likely bc Sony was engaged in the same activity (TLG, FF7 remake, etc) and staved off any possible momentum MS might have had with that demo. So, when you are a pet project with limited financial upside on the sales end, missing deadlines and budget milestones is going to be an easy call from the publishers perspective.
This likely also does not bode well for Crackdown, but I hope I'm wrong.