In say, MS in 2060, where the state is majority non-white and the legislature is also majority non-white but a compact white majority district can be drawn, would this have to happen under the VRA?
This isn't the point you're making, but I want to call out that it's not realistic to expect Mississippi's current governing group to peacefully hand over power if we reach a point where African-American voters outnumber white voters. Consider everything we have seen in states like North Carolina, Georgia, and Texas where a diverse coalition that favors Democrats has risen and the incumbent party has lost its damn mind through gerrymandering, poll taxes, and voter purges. Mississippi would have minority white rule for decades unless the federal government / Supreme Court forces changes.