I'll admit that I was apparently ignorant on the topic and had a misunderstanding of the ideals of the alt-right. After reading for a while, I have come to a similar conclusion given the idea(l)s of NPI, Spencer, and so on.

As with anything label-related, it's hard to determine who wears what label for what reasons and what elements of the label are made up by outsiders attempting to discredit the wearers of the label. But it is currently difficult to come to a conclusion other than yours given the facts I've been able to find.

As a small aside, I still hold a small amount of hope given the history of inaccuracy in the media's portrayals of 4chan. Hopefully this is similarly overblown and hysterical...