Carl Benjamin doesn't identify as alt-right, and he doesn't like a lot of the things alt-righters do. This is true. However, he knowingly acts as a gateway drug to the alt-right, believes in giving the alt-right a greater platform than they already have, shares several common beliefs with the members of the alt-right, and prefers the alt-right to anyone leaning even slightly left of center. Carl Benjamin is not a member of the alt-right, but he sure is a fellow traveler of the alt-right, to use some paleoconservative terminology.
That said, that really has nothing to do with the reasons why I don't really take him as someone worth listening to, which mostly has to do with the fact that he's a pretentious douchebag who thinks he's smarter than he actually is, has this annoying voice that's just grating to hear, and actually thinks Kekistan is funny.