Yes, good point, and this should have been part of the public discourse since this whole thing began.
The states followed the federal administration into the response to the virus, even had their hands out for federal help. The question is will the states follow the POTUS out when he decides to leave. You raise the point that legally he can’t make them - states are not sub-units or servants to the federal government is true.
I read my governor’s executive order laying out a legal basis for why his curtailment of the citizens’ civil liberties was necessary for public health and safety. Therein were many “Whereas’” citing federal law. A question could then be whether once the federal government’s legal action/basis are withdrawn by the federal government itself, or “expire”, what legal impact does it have on the governor’s prior order? And is the mutiny to which Trump referred, based on the powers reserved to the people?
Folks might want to read the decision mentioned here....
For Easter, a federal judge wrote a luminous decision defending religious liberty
Note the use of the words overbroad and underinclusive. Those can be applied to more than the infringement of religious rights.