I know these kinds of comments are generally kind of joking/ exaggerations born out of frustration but really they’re anti-progressive and kind of a parallel to MAGA mentality at their roots since the people who would be left behind or have their lives upheaved in the most catastrophic ways would be the most vulnerable. For example, the two states you named are notable in that TX has the largest Black population in the country, and MS has by far the largest proportion of the population that’s black - almost 40%. Being willing to sacrifice other people or turn them into refugees for your own safety or comfort is not the moral high ground.