That depends on how the court is packed, and how it functions after. It's possible that court packing could be seen as a success, even if each side alternates at packing, just because having many justices can minimize some of the court's current limitations.

https://time.com/5338689/supreme-court-packing/

To put it another way, the size of the House, Senate, and Presidency are determined by the constitution. The Judiciary is the only branch where it's size can be increased without a constitutional amendment, which could favor populism, regardless of who is in power, if it's expanded significantly.

Being as small as it is could speak to how the government has a tendency to concentrate/centralize power, even if it's relatively easy to spread that power out.