Such old adages usually have a a large grain of truth. As always we will have to wait for the important details of the Maybot's plan, the Rees Mogg line. In the mean time look at who is pleased, the CBI, the IOD and the Civil Service all of whom are on the EU gravy train big time and represent the bosses.
The plan will be like Tory budgets and start to unravel very quickly in the next few days. Corbyn will exploit it, the Lib Dems will waffle and the SNP will use it as grounds for another Scotttish referendum.
The only party we can rely on to save us from the EU evil empire will be the DUP and that will be gone when they lose the balance of power at the net election.
David Davies as UK Brexit negotiator still has some power despite Oily Robbins. I suggest the best tactics for Cabinet Brexiteers is to drag their feet, say nothing to openly contradict her but only offer lukewarm support and lots of unattributed briefings, a de facto challenge to Mrs May to sack them. Its always better to be sacked than resign. I forced Farage to fire me from UKIP NEC. I did not resign and I am glad I did this. I put clear water between me and Farage. His chosen instrument was Bannerman who subsequently went off to join the Tories.
Unlike the Tory Brexiteers with May I never had any disagreement with Farage over policy.
I think Davies and Bojo are unsackable. To fire either would bring down May's government. She is still weak and wobbly and blamed by Tory ex MPs who lost their seats after her unnecessary General Election last year. Her days are numbered, Mene, mene, tekel tekel as was written on the wall at Nebuchadnezzar's feast in Babylon, a bit like May's meal at Chequers yesterday.