And where did the leave(IE the side that won) campaign say remaining at any cost was ok? Or freedom of movement, customs union, having to follow EU rules and the ECJ.
Why do I have to keep pointing this out:-
THERE ISN'T AND NEVER HAS BEEN, A DEAL OF ANY SORT ON OFFER.
The Withdrawal Agreement isn't a deal. It is only supposed to cover less than 2 years until the end of 2020. Come 2021 we would be back to "No Deal". That is unless you count the backstop as some kind of back door illicit deal that we(including Parliament) get no say over.