The word that immediately comes to mind is 'hubris'
Cummings thinks he is far more important and significant than he really is and also has the hubris to think he knows more about the electorate than he does.
The party he is planning is to the right of the current Conservatives although not as in your face as Reform, but Farage is a far more astute political operator than Cummings and will chew him up like the potato crisp he is.
Apart from anything else read what he says about the war in Ukraine. Yes, Ukraine is a highly corrupt country, but it is a country that has been invaded by a neighbour whose only aim is territorial expansion - and that is totally unacceptable in this modern world whether the Ukrains is corrupt or a model of transparent democracy. Ukraine is the first domino. If Ukraine falls, how safe are Georgia, Moldavia, Estonia, Lithiania, Latvia.
Cummings complete misunderstanding of our suppor for Ukraine shows just what an arrogant and stupid man he is.
"Those whom the gods wish to destroy they first make mad"
Cummings is well on his way