If not doing something because it was "inconvenient" was the ciriteria for Brexit..
The UK would not be bothering to leave in the first place.
Since it's going to be a ballsachingly massive PITA.
So I think Davies pinning his faith on applying that argument to the EU downgrading UK access to "Guest" login status was wishful thinking at best.
Bit like every other part of the UK's Brexit "Negotiations"
What's the UK going to do? Threaten to Nuke Brussels?
Really?