Fair enough, but the claim was he's a liberal.
Establishment Republicanism isn't liberal.
"Establishment Republicanism" is the very definition of modern liberalism. Any Republican who would prefer the the unabashed socialism of today's Democrat presidential candidate over the proven conservatism of President Trump is indeed a liberal whether or not they choose to admit it. The line between the two ideologies of conservatism and liberalism has never been clearer, and the Never-Trumpers have chosen to support the leftists while 94% of Republicans support the President. They may call themselves Republicans, but they will never be welcome in the Republican Party again. We now know that they were liberals all along, traitorous enemies from within who undermined conservatism from the inside. Good riddance to bad rubbish.