Yes, but there's no appetite for a change of that magnitude in the US today. But if PR is your goal, I think a more representative version of the current system is more likely to lead us to that than an increasingly less representative version of it through persistent creeping gerrymandering.

There's only so much appetite for change. I wouldn't want to waste it on a marginal improvement that only benefits people with similar perspectives if they live in the same area.

And switching to proportional representation would help fix lobbyist control of government, which is a huge problem.

Ending gerrymandering just changes who is going to serve the lobbyists.

And the appetite for change goes up when there is something worth changing for. Helping a few people in a few districts doesn't do much for most people.