Hello Dg390 . Bands and artists have been touring Europe and the world long before we joined the ECM. Have you never heard of carnets? Booking agents deal with such paperwork.
Your other post is a Strawman. The Oxford Uni contingent of the Great Barrington Declaration signatories, are I suspect mostly pro remain. Ought us Brexiteers disagree with them and disapprove of their conclusions and recommendations systematically because we disagree over the matter of EU membership?
Next June it will have been half a decade since we voted for independence, and here you still are looking for conflicts. When you can't find them you pluck them out of mid air as if they actually exist.