First, those in charge disagree on the best way forward.
Second, they know that once Brexit is 'reified', it will, almost inevitably, lose some support. 7/
This shows the lack of a plan, and the lack of any consensus-building up to Oct 2017 (though how the Overton window has shifted since then...).
legalresearch.blogs.bris.ac.uk/2017/10/a-call…
legalresearch.blogs.bris.ac.uk/2018/11/why-th…