Already has. Moved to Texas in 2017 for work, leaving at the end of this year for somewhere where the heatwaves are at least less intense relatively speaking, and where the power grid isn't run by greedy fucks causing it to fail all the time.
I know two that have already left because of it, and one other that's planning for it in the next year. The intensifying antagonism here is another factor. We're trying to convince as many as possible to get the fuck out, and abandon the south.
It was my original plan, I was going to move to the Ann Arbor area, but I'm heading to San Diego instead just because a friend of mine, who's like a brother to me, is temporarily moving back to San Diego and I decided to follow. Long term, Michigan is still on my radar as my #1 pick though.