I don't disagree with any of it. Do you really think Kingdom Hearts has ever lived up to it's full potential? They basically had carte blanche on the most appealing license ever. I can't think of a "western" game they haven't mismanaged at all. Ran Tomb Raider right back into the ground.
It's hard to say on Kingdom Hearts. I don't think they exactly have carte blance with it as I think they have to get approval on anything that directly uses Disney assets, and in general Disney co-owns the IP so that may have tied things up before I feel like the insistence of using celebrities instead of voice actors has probably had a negative impact on the budget, but it's hard to say there.
Looking at Square-Enix since the merger post Spirits Within, I do kind of think KH has lived up to the maximum potential it could with how foolish the company sometimes is.
Out of the Western games, I can think of two games that weren't mismanaged at the time. Deus Ex Human Revolution got all the time it needed, and even was able to take advantage of what should have been a devastating leak to improve the game. Second in my mind is the first rebooted Tomb Raider. SE seemed to lose their shit after it came out and "under-performed", but the game itself didn't have any major issues or hiccups I've heard of. But yeah, I guess it's been since about five years at least since a game didn't get screwed over in one way or another on the Western side.