You've got it backwards. Almost nobody encompassed by the "alt-right" label approves of its usage. It was created by the left to brand and contain the movement. See this movement? They're the alt-right because I said so. Oh and they have nazis. Bingo, movement discredited. You can see the wheels turning in the old media's head.
Your post is a good example of how the left is going to lose really hard in the coming years. Politically motivated leftist outsiders like you, reaching reasonable conclusions of your ideology, are pushing the exact opposite narratives that your overlords want you to. The result can only be more infighting destroying you from the inside out.
I feel confident entering the hornet's nest to say this because I know the mob will not heed my warnings, and instead devour any of their own that stop to listen. The left can neither win with nor without people like you, and so it is doomed to either disappear or transform into something not recognizable in comparison to its former self. Something far more right wing.
Happy Thanksgiving!