Land mass is not a constituency.
That’s essentially what the author tries to claim by showing islands of Blue in See of red. You can’t get elected president because you won the most land mass. You have to win the most Electoral College votes — which are apportioned by population — so land mass voting demographics, though disheartening really are meaningless.
The Senate is the balance beam of Government. No matter what the population, California has no more votes in the Senate as does Rhode Island.
Anybody who thinks succession is an option is a Net.looney.bin.
Do some research, the population is evenly split between urban and rural. If Texas declared independence form the USA would you take up arms against her?
If State legislatures vote to secedes the WHOLE state secedes. Even those nasty blue cities. If the urban socialists want to leave send them on their way.