I lived in Britain during the Leave campaign and it was all about getting the benefits without the responsabilities or costs.

In fact, the sequence of political events that lead to the Leave Referendum was Britain in the EU trying to have less and less obligations whilst keeping the benefits of Membership to the point that eventually, when the UK demanded "otherwise we have a Referedum on Leave" to not to have to abide by Freedom Of Movement into their country whilst keeping all the rest including Freedom Of Movement for Britons into other EU countries, the rest of the EU said "No!". After this, David Cammeron was under huge pressure to do the Referendum "to show the EU" and the rest is History.

The La-La-Land fantasism of the Leave side was always unbelievable, with everything from genuine expections of, post leave, having "Same Rights as Members With No Obligations", to after Brexit "Other EU Nations will Follow Us Out".

I would say that by this point it's clear that whatever Britain is "showing the EU" isn't quite what was in Leaver fantasies.