Not even a majority of Republicans want a civil war. It's just a bunch of wonks looking for views and loud idiots who don't get what it would actually take for it to happen or what the fallout would be. This has also been a narrative that Russia has been pushing for decades.
I live in Texas. The rural and urban Republicans here do not all see eye to eye. When they've actually worked at passing non-performative legislation the two groups have fought each other on many occasions. There is no monolithic GOP here. And if there's no monolithic GOP in Texas, then it likely doesn't exist elsewhere. They only succeed here because of the stigma attached to voting Democrat. If the Dems had run someone other than Beto and who had good charisma, there might have been a fair chance at unseating Abbott. As it stands, Beto still gave him a run for his money and his smallest win yet. Hell, it was the smallest GOP win since W beat Ann Richards in 1994, so almost 30 years. This is against a man who the GOP here absolutely hates with a burning passion. There were plenty Republicans interviewed who said they didn't want Abbott, but Beto was a non-starter for them to vote Democrat. All that and he still got the biggest vote percent for a Dem in 28 years.
All this talk of civil war is just bunk that has no basis in reality whatsoever. It is all just foreign propaganda that people on both sides are eating up without using their critical thinking skills.
Edit: Allow me to put forth a more timely statistic. Recently the Texit movement tried to get a resolution to discuss Texas leaving the Union. Out of the 103k signatures they gathered, less than 9k were actual Texas citizens. So, in a state with 30 million people, this group could not even muster the 0.3% of the population of this state to want to leave the union. They didn't even get 0.03%. So, do you think Texas really supports leaving the Union or joining a Civil War? No, they don't. Neither do the politicians because they know the absolute nightmare it would be to try to support all the people who would lose their federal support. Every military veteran getting support from the government, every retiree, every child in a poor household. Texas makes a fair bit of coin, yeah, but they don't make enough to be able to replace the payment for all those without significantly raising their taxes and people here are already pissed about taxes, especially their skyrocketing property taxes. There's zero chance any politician who supports any increase in the way the government generates funds, whether you call them taxes or fees or whatever, will get re-elected. Abbott, Patrick, etc, are not so stupid as to not be aware of this. Nor are other conservative political leaders across the country that stupid or unaware, either.