Nevertheless when put to British voters 50% of them decided that best possible deal still wasn’t in their interests. And that 50% who voted No was more people than even voted in the EU elections (to elect MEPs) before that. So the EU was very much fine with their democratic process seeming like an irrelevance, while at the same time the Brexit vote was actually an example of a democratic process working as it should. One can argue about craziness or otherwise, but there were at least 17 million crazies at the time and if there was a referendum to rejoin the EU would likely be a different 17 million crazies voting No again.