Have they read the treaty? Do they know what's in there? Remember Johnson agreed the treaty on a Thursday and put it to the house on a Saturday. What I do know is Johnson didn't seem to know that putting a border in the Irish sea would result in paperwork on the Irish side. It's clear from this channel 4 newscast that Boris doesn't understand the detail. And if he doesn't then the Tory Brexiteers don't either or they do and have decided to be tribal.
https://www.youtube.com/watch?v=chmB-Xk--qw
One former Tory Ann Widdecombe made the point that the Tory papers keep saying in true Muddy style 'vote Brexit Party get Corbyn,' to which she replied "vote Brexit Party get Brexit." I liked that. And isn't that the truth since they are the only party now who offer a true Brexit?