If gp thinks a win by Le Pen or her counterpart in Germany is a given, he does not understand the election system in each respective country.
Living in the EU, I actually experience quite the opposite to what jerf is predicting: a reemergence of the EU as a passionate project after Brexit. People have taken the EU for granted for way too long, now it starts to emerge as an issue that is worth fighting for (check e.g., pulseforeurope.eu). Granted, there's also a nationalistic reemergence acting against the EU, but at least it's proponents are starting to fight back.
I don't necessarily predict the disintegration. I'm pointing out that the idea of blaming Trump for it is temporally silly. It's an ongoing process that didn't start three weeks ago, and even trying to backdate it to Trump's candidacy would A: be insufficient to explain anything anyhow and B: have to explain how Trump somehow knocked over the EU despite hardly saying a word about it during his campaign.
But as for everything being fine and dandy, when you get to the point that you've got sub-polities not only seriously talking about secession, but actually doing it, no, that polity is not in good health.
If you look again, I didn't mention that name at all. The only relation is that, after the changes in London and Washington, outside interference will now not only be coming from Moscow, and they are capable of exerting far more refined influence than Moscow's online troll army and funding of anti EU activists.
Living in the EU, I actually experience quite the opposite to what jerf is predicting: a reemergence of the EU as a passionate project after Brexit. People have taken the EU for granted for way too long, now it starts to emerge as an issue that is worth fighting for (check e.g., pulseforeurope.eu). Granted, there's also a nationalistic reemergence acting against the EU, but at least it's proponents are starting to fight back.