Yeah, I think he was trolling as well - sort of the 4Chan clowning that he thinks is so clever and funny because of the reaction it gets but that's certainly a very juvenile, unserious conduct from someone who we're supposed to believe is so important.
At the same time, he does indeed have a history that, if anything, would shade in favor of the kind of viewpoint that supports Nazism or some elements of it. He very recently supported the AfD, which has its own history of trivializing the criticism of Nazism if not outright supporting it.
Is it one or the other? Or a little of both? The silliest, most absurd thing is the people (who at least take themselves seriously) going out there on the news trying to tell us to our faces that it wasn't what it very clearly was.