“if that is true, “
Short memory eh?
That little argument goes back when it was the Democrats filibustering Bush’s nominees and the GOP floated out the idea of a “Nuclear Option” of getting rid of the filibuster and only require a simple majority for confirmation.
Which, by the way is what the founders had in mind since there is nothing, zero , nada about a filibuster in the Constitution.
I’m not completely clear on what you mean, but I think that you are saying that the Democrats stated that a president should get his nominees, so what we have are Republicans jumping in there and also saying it on behalf of Democrats. That is my error; I never listen to Democrats.