Would Brexit voters vote differently now? I doubt it. They didn't understand the complicated economics of staying/leaving at the time they voted and they still don't.  I'm not criticising them because neither did the remainers. The issue should never have been put to a vote by the ignorant masses. (I'm including myself here.)

We won't know for many years if it was the right decision. (In fact we may never know, because we don't know what would have happened if we had voted to stay.)