I think that it's understood that when we use shorthand such as "US is not supporting Ukraine" that it is the respective governments that we are discussing. The point about the "majority of Americans" is true enough (though you might say that the majority of Americans care about the price of gasoline and groceries and little else politically) but it is rather irrelevant if the administration does the opposite.
In other words, "thoughts and prayers from people" is not enough to make you an ally. Money and policy is the real thing.