I tend to agree. The President has no constitutional authority to overrule a lot of what states do.
However, what he can do, and has already begun to do, is exert political pressure on the states. The longer these lockdowns last, the more impact Trump will have in persuading states to get their stuff together, and get people back to work. Who wants to be the last state to get with the program?
Oh, can’t forget, Trump has the power of the purse. He can leverage the states by reducing or slowing the amount of federal funds that are given to the state. That’s billions of dollars worth of leverage.
Uh, no. That would be what Congress does.