But how often do Lukashenko and his circle actually fly out of Belarus anyway? He already had no problem with closing his own borders before anyway, so it's not like this is going to seem like a strong move to him and it only really hurts the Belarusian people.
They sanctioned individuals involved in the decision too. And at some point, the Belarusian people will have to take responsibility for their leaders. I'm not saying it should happen today or that they should start a civil war, but they should think about ways to change.
You think people were fine until now but not being able to fly to Spain suddenly makes them see their error?