other than the fact that the suggestion that people who don't like the political environment they are in should just run away rather than try to change it. Also he kind of ignores the fact that it isn't really possible to change to another country just because you feel like it. There's a lot more to it than that, unfortunately.

I think the sentiment behind this (on the left it often is presented as wishing a horrible death on another) is that folks are tired of being forced to alter who they are to accommodate another, as it infringes to some degree on ones freedoms and preferences. Or requires theft of sweat to fund, etc. The fact that so much doubling down is taking place eroding individual rights is a road that will lead to war (not so civil). Many who grow angrier by the day say things like that in the hopes this problem will just disappear before there is no more corner left to back into.