I wish this were the case. Unfortunately, IMO, the only thing these nationalist movements want in Europe is the ability to remain "socialist" within their own borders. Their voters ultimately still want the "freebies" associated with their own govt's promises, while not having to fund every other country's socialist utopian dream too. Nothing will structurally change for the better as it relates to personal responsibility and individual freedoms.
They have essentially ripped the bandage off a fatal wound and blindly believe all will get well. They actually believe they will have more money doled out to their own populations. It will be exactly the opposite. It opens the door for more govt control and greater restrictions on the individual.