Of course he’s saying that now bearing in mind his current electorate, however once he’s elected reality kicks in and he’s faced with the same problem May was. Thing is, he’s not as politically naive as she is so I don’t see him bringing the WA back unless he knows he’s going to win the vote. So if he can’t negotiate any changes I think he’ll make them anyway and get the WA passed. Then it’s over to the EU and if they refuse to move he’ll blame them for their intransigence, then he’ll be stopped by Parliament from leaving with no deal and put the blame on Remainers. Then he’ll use the anger and sense of betrayal this causes to win a majority in the GE that will follow.