Texas movements are a hot topic these days due to the stupid policies of the federal government, which the Republicans are using to their advantage very successfully with political correctness. Today Ted Cruz's open threat to Biden with the Texas flag is being greeted with enthusiasm by Republican voters. But go back a few years, when Trump was in office, a similar populism, albeit for different reasons, was being carried out by the democrats in California, and the website explaining the secession campaign and the demographic characteristics of the country is still online.
I think Texas is a bit of a special case, but in general, constitutionally speaking, the other states of the union do not have the right to secede. I think that the Federal system is suffering from a severe blockage, the polarization is becoming more and more rigid, and the main reason for this is the establishment, which has politicized all the institutions of the state.
Calexit refers to the secession of California from the United States, after which it would become an independent country.
www.investopedia.com
After Trump's victory, the strongholds of the democrats, characterized as the Blue Wall, could be much bolder than Texas. And at the end of the day, if they enter a period when no one wants to live together anymore, a US dystopia in which all these states fight together against DC is not entirely implausible. Wait a minute, a civil war movie about the alliance between California and Texas will be released just before the elections, right... Interesting... This is why the movie's plot, rather than its main theme, was considered absurd. But perhaps this subtle detail will make more sense in the future.
Also, see below what Vivek said when he withdrew his candidature: Okay, I admit that Vivek Ramaswamy is a demagogue who does his job well, but what he says contains real US fears. The country is disintegrating not only systemically but also spiritually.
I don't know if the US will fall into a spiral of civil war again, but one thing I see is that the US public is being acclimatized to this idea.