Yes, for american standards Sanders is certainly a radical. However, I think the USA really need some radical changes, even before Trump came to power, but even more after that.
But I do agree that Sanders is too old to start that. And from the other candidates I don't expect more than "business as usual". No matter what party they are from.
So Buttigieg is a maltese name? Well, that explains a lot. You don't see many of them around anywhere. I think there are not many of them - even in Malta. :)
Many--maybe most--people here think America needs some radical changes--the problem is agreeing what those changes will be! That's the biggest reason why Trump was elected, and if Sanders gets any traction at all, that'll be why with him, too. But as always, what they say during the campaign often doesn't equal what happens afterward.
I read a novel set in Malta, and that's the extent of what I know about the place. Time to do more nonfiction reading!