Well, if you want to take the route, it was Mitch, just like he did with Garland, who made it a given practice to automatically filibuster every one of Obama's judicial nominees, when the backlog grew extensive, Reid went that option, but he purposely did not extend it to cover Supreme Court Justices
The minority has zero input, Mitch could have gotten Sean Hannity on the Court if he wanted to, with closure the minority can force a sixty vote requirement, eliminating the nomination of an overt ideologue or partisan hack
True. And before that the nuclear option was discussed because the Democrats were blocking Bush's nominations when they increased the number of filibusters.
You seem to be trying to make this about parties. They both use the same methods to accomplish their goals--they are for filibusters and naming SC picks in an election year and against those same things when it hurts their interests. That is the point of elections--to gain power to achieve your agenda. Neither party holds any kind of moral or ethical advantage over the other when it comes to fighting for their side.