I haven’t heard anyone mention this, but, remember that up until the start of the 2017 hearings for Gorsuch on the Supreme Court, the Senate rules allowed for filibusters of Supreme Court nominees.
Chuck Schumer tried to start a filibuster over Gorsuch’s nomination, and the response was that Mitch McConnell went for the “nuclear option”, and changed the rules so that they can’t filibuster Supreme Court nominees any longer.
If the filibuster rule were still in place, I bet that a nomination now would be filibustered, on the “high principle” that we are so close to the election, that we shouldn’t be filling a Supreme Court vacancy now.
So for some of what is going on, we can thank Chuck Schumer for starting a chain of events which led to the end of Supreme Court filibusters.
Obviously a filibuster would kill the nomination, but it was Harry Reid who used the nuclear option of majority vote on Judicial Appointments and thus the extension by Mitch on Gorsuch.
That’s why going all in all the time is dumb. No way would they have killed the filibuster now but at the beginning of the Trump administration replacing Scalia it was a way easier argument to make.