No, because if they want to outsource for sure, then who? If I got mad about Platinum working on an NG, that means I'd only be ok with TN working on NG and no one else. Or else what, Soleil? Valhalla? Doubt it'd happen. Platinum might get it wrong, but I have to imagine every other dev out there would do an even worse job of it than them. I wouldn't panic and would wait to see how the game turns out before judging.
Yaiba was made by some random studio that went bankrupt after. Platinum games is well known and different so this is a shot from another that actually is familiar with it. If that what it takes to make a great NG game then so be it, no complaints here.