I saw how Brexit affected some people in Denmark who supposedly were very EU sceptical (Denmark has always been probably the most sceptical member, even more so that the UK). When they saw that exit could actually happen their anti-EU enthusiasm went down quite a bit. Bitching about the EU? Sure. Hating it? Yes, please! A double portion of that. Giving the two fingers to the EU and voting against it? Hell yeah! Actually having to leave? Wow wow, hang on, this is not what it was about! Now they saw that this can happen.