California, declared by liberal media to have put an end to gerrymandering, actually did a very good job of it in 2022.  The WSJ had an article about how the practice was alive and well in California, despite their "reforms."  Take a look at this map.  look at the small blue area in the middle of heavily GOP areas.  This is Fresno and some solid GOP surrounding territory, but not enough GOP territory to switch the district.  If the GOP controlled the system do you really believe this blue dot would exist inside a large swath of heavily GOP territory?  I think rpbobcat summarized it perfectly.  Everybody does it when the have the chance.