Trump is saying 'Here is my agenda, if you like it or can live with it, come on board, otherwise I don't need you.'
'Criticize it and me from the outside'.
That way you can decide for yourself, but he's not coming to run after you for your support.
It's an admirable stand, one which only a confident politician would take.
That's why you've never been confronted with this choice before.
It also completely deflects attention from the ridiculous "never" fools.
What they want is for Trump to make some sort of kowtow towards them, so they can flounce away in righteous indignation saying "Never means Never!!!"
Instead, he's dismissed them as irrelevant. And, seriously, what do we think at this point is going to make Bill Kristol suddenly start supporting Trump?