American here - this stuff is actually widely known and accepted among our progressives, who are the people most likely by far to leave.

We just get fucked out of political power at the federal level by the outsized representation of small-population, rural, die-hard-conservative states. For example if the presidency was by popular vote we likely wouldn't have had a Republican president since 93 which would have made the supreme court liberal by 8-1.

At the most fundamental level, the US political system just wasn't built to handle the increasing rural/urban population disparity, and at some point things will need to change. What that change looks like is anybody's guess. One scenario is that with the economic failure of the backwaters, plus the housing crisis and additional automation, it becomes economically feasible to just build/buy enough housing in the backwaters to be able to have a controlling share in the vote. Which obviously sucks in a lot of ways but it might be the solution with the lowest barrier to entry.