European disintegration will not affect anything in EASA.
If you were paid 100k-200k/year to do some job, and you have a family+lifestyle to feed, you will just carry on as before.
What the present large-scale political situation would impact is the ability to expend significant political capital on doing something about a "disobedient" country.
If e.g. the Czech Rep stuck a finger up to the EU and converted FAA IRs into JAA IRs, for 5000 euros, the EU would not do anything about it. But the Czechs won't do that (all the small countries brown-nose the EU at every opportunity) and the bigger countries (France, UK) will probably just issue postponements. Germany will play ball; German people normally do as they are told and if they were told to sit 100 exams they would just do it.
So I don't see anything changing.