Blue in Munich
Crocked Professional Yeti Impersonator
The EU can't let the UK pick the trade opportunities it wants to preserve and discard the things it doesn't want like freedom of movement. Otherwise, every other country would want to do the same. That being the case, I don't believe that the UK will have the same free access to EU markets and this will inevitably lead to a loss of jobs. Virtually every UK business organisation is expressing exactly these same fears.
So not actually a certainty at all; just the fears of those who would have preferred Remain to win, looking to blame the Leave side for something that hasn't happened and may yet not happen.