Alt right was around as a term for a while. Hillary seized upon it as a negative label to put on people, but it pre-dated the primary season.
I saw the term during the #GamerGate controversy. Alt-right is anti-feminist, anti-SJW, and more “in your face” than the old “National Review” right Establishment.
There was a backlash against socialist justice warriors in the 1990s. Lots of people recognizing the self-censorship that was being imposed and joking about PC fairy tales.
People reluctant to say “mailman” stumbling to correct themselves as they spoke “mailwoman, er mailperson, er postal carrier...”. By the late 1990s people had tired of it and didn’t care who was offended by the previous terms.
With the election of GW Bush as president in 2000, the national agenda at controlling the language and culture declined. The election of Hopey-Changey-Commie Obama in 2008 (and nearly a decade of college graduates in that climate) brought it back.
With so much typing and texting these days, the word-replacement is more automated (and imposed on worker bees at the corporate level with mandated employee “diversity training”).
If your definition is accurate then I happily confess to being Alt-Right. I am all of those things.