It is IMHO a mistake to view Elon Musk’s comment as merely "flippant". We should take the risk from "Elon Musk’s comments stoking civil war", and his personal platform to amplify radicalism and propagandise hatred, very seriously.
Even if the civil war that he fantasises about is currently a nonsense.
In this case, Musk (and many others) only extrapolate the trends at play for 50+ years to their logical conclusion, and actually I'd say that denying this it's becoming more and more a case of ostrich syndrome.
Or it's just wishful thinking. Musk's comments generally suggest he has no idea about the UK.
Like a lot of Americans (and, unfortunately, quite a lot of British people) he assumes the UK is far more similar to the US than it really is.
Elon doesn't profit from chaos, he is just using psychological manipulation to empower his allies.
Yes that will act to consolidate a voting bloc for Musk's allies. If it were additionally to cause chaos that would be a bonus. Right-wingers in the US love nothing more than to point to a situation in a foreign country as a warning of the perils of leftism. Usually they just make shit up but of course it's better not to have to.
I think this too is utter nonsense. Too much of the twitter brainrot.
But it does highlight the dangers that this poses, that people can easily fall into it as you have done. So, Mr Musk's incitement is a danger to you and others. Even if the "civil war" remains someone's fantasy.
What 50+ year trends? Less racism?