Well I still dissent in part. You're right that the rule change could allow more polarized justices to take the seats. However, since the rule change only Neil Gorsuch (54-45), Brett Kavanaugh (50-48), and Amy Coney Barrett (52-48) have taken Supreme court seats so the rule change absolutely came to bite Democrats in the ass in a way that is amusing to me on levels you can only begin to imagine. The fact of the matter is that because they lost 2016, they missed the chance to appoint 3 justices which would have permanently libtarded the highest court of the land. They also lost the chance to pack the lower courts with justices. Even still, the departure from supermajority is a symptom of the polarization rather than a cause as the parties become unwavering voting blocks on supreme court nominations, and impeachment. The middle cannot hold and is bound to collapse, and political power will simply dwell with those who can eek out a marginal victory.