That's right, there's no turning back, now that the major U-turner has left the stage.That's what you get for electing remainers as PM. Tough. They are there to carry out our wishes, not the other way round. Anyway, we've crossed that bridge so there's no turning back.
(Imagine the hoops UK would have to jump through to qualify for membership.)
But there's a heck of a lot that could be done to resolve most, if not all of the problems.