An individual who is choosing to be only for themselves is one thing and I wouldn't condone that though I don't know how many are actually paying their way. I do know deception has occurred with sometimes laxness in proving you are eligible.
But a state buying it up? It looks really bad IMO because NY is trying it out. I though Cumuo beat COVID? Shouldn't he be willing to allow other states before his? Unless he's buying it and going to distribute it to all 50 states and our territories..which no state would actually do that if they were to buy it. It just makes us look like greedy people even though the object being fought over is a vaccine. It would, IMO, make even more of a mockery of the whole "we're all in this together" spiel that many people have come to joke about because it couldn't be farther from the truth in many ways.
Eh. I don't see the problem, honestly. States have basically been left to manage this entire pandemic on their own up to this point. Why shouldn't they be allowed to purchase and distribute vaccine if the federal government isn't going to do if efficiently? It's a free market. And states rights, and all that jazz.