There's a difference between putting a nomination to a vote and denying versus "we don't accept nominations in last year of an outgoing POTUS" yet turned right around and did it for Trump's third nomination. In that sense, 2 out of 3 would be deemed illegitimate on the same rule being applied in opposite ways. If you can't see the hypocrisy in that, then we really can't have an honest conversation
Which is a scenario it seems the Founders didn't really anticipate.