1. the Alt Right is on the rise
2. Trump won despite them.
3. Trump and the Alt Right don't compromise on their principles and want to WIN. Conservatives LOVE compromising their "principles" to appease the Left and they LOVE to lose.
4. The CPAC crowd the the Cuckservatives are quickly becoming irrelevant and they know it. They've been exposed as cucks and frauds.
5. Nobody is buying what they're selling any more.
I totally grok the rest of your post, but I have no idea who the "alt-right" are.
As far as I know, that's a fake news term made up by the media, to create a new boogeyman for the left to define and hate on.
I won't be adopting that label anytime soon.