I am only arguing that state legislatures can gerrymander districts that give them more votes than the population voted for. But it is really hard to gerrymander an entire state and split it up so two Senators can win of their preferred party.

Would GA have two Democratic Senators with a Republican control state government? On the other hand would Susan Collins be a Senator from Maine?

Given the choice of trusting the people of Mississippi to do the right thing and the electorate of the US to do the right thing. The entire US has been more on the side of the angels than the southern states - yes that’s a very low bar.

It's easier (or as easy) to change gerrymandering as it is to change the senate back to it's intended purpose. If you want to argue that an amendment to make gerrymandering unconstitutional should be a prerequisite to returning to state legislatures selecting senators, I'm fine with that - because it's also a much more likely amendment to pass. A big chunk of Americans dislike gerrymandering. Only a tiny fraction of Americans know or care about the different chambers of Congress being intended to serve very different purposes.