As long as California or some other corresponding Blue state does the same or punishes them by 2x that, its cool

If Red states think they alone can get away with this bullshit, boy do they have a hard fucking lesson coming their way. Blue states simply need to grow a pair

I don’t understand how this is legal. I thought map drawing had to be done after the census, not every election.

This strategy surely does have other risks. The last general election slightly skewed red by 1 point. You simply need to have the trend shift a point in the other direction and a lot of these and more become blue.