Requiring an institution that is ostensibly nonpartisan to have an even partisan divide is fucking stupid. It's both sidesism at its finest. I don't believe that filling the court with conservative justices is inherently a good thing and I don't believe bipartisanship is inherently a good thing. The Patriot Act was bipartisan, sure it was a steaming pile of shit, but isn't it great that both parties came together to fuck us over?
His argument also seems to based on the theory that if the Court is deadlocked, that will force them to come together. The alternative is that the Court will simply be deadlocked, constantly, all the time. That is putting a lot of faith in a court that's currently stacked with hardliners.