Price, most likely.
It’s a stretch, however, to call these “spacesuits.”
Here it is:
It looks cool, and that’s fine, but this is not something you can go outside on an EVA in. It’s just backup life support, designed to keep you alive in the event of cabin depressurization, and to give you the minimal mobility needed to fly the craft. It’s a highly simplified design, with not only integral boots but integral gloves. Those are there so they are always on in the event of depressurization—but that’s not a feature you need or want in a proper spacesuit. Since one size definitely does not fit all, that pretty much guarantees this thing is never meant to be pressurized except during testing or a life and death emergency.
It’s the functional equivalent of these:
Only a lot cheaper, less versatile, and probably safer for non-military passengers. As such, it’s probably a better fit (no pun intended) for what’s meant to be a cheaper, more automated spacecraft. And in fairness, I’m sure they won’t come in only one size.
So are they better? For doing work in space, either inside or outside the spacecraft? Absolutely not. But for keeping paying amateurs and passengers safe on a budget? Maybe.