Of all the mistakes that were made by Trump's opponents during this campaign, I think the biggest one was in embracing - down to the letter - the tactics of the regressives. Screaming that Michelle Fields was manhandled and abused by Trump's chief of staff, going on about how he's clearly afraid of 'strong women', repeatedly suggesting that anyone who supports him must be a misogynist racist who has a problem with women and minorities? Those moves are straight from not just the left-wing playbook, but the SJW playbook. Using them during an election where one of the overriding suspicions was 'our party is controlled by sellouts' wasn't desperate - it was suicidal.
Mike Flynn (who doesn't agree with anything I say as far as I know - just getting that out there) likes to use the phrase now and then that 'sometimes the mask slips.' But when someone decides to blatantly use SJW language, just as an SJW would use it, putting the mask back on becomes a lot more difficult. Ben Shapiro right now is pissing and moaning that he's considered, basically, an SJW quisling, despite engaging in what I regard as some downright brave and crucial culture war acts. What he doesn't seem to understand - or at least, what he doesn't want to accept - is that the moment he decided to use a page out of their book, he essentially endorsed a cultural narrative that SJW-hostile people despise. Shapiro seems to think that, well, he was just doing what he thought was right. But if that justifies what he did, then he shouldn't be surprised at his - putting it mildly - detractors. They're doing the same.
The Alt Right doesn't want to claim the SJW's methods and presumptions. They want to destroy those things altogether. Right wingers who use them shouldn't be surprised to find that in the eyes of the Alt Right, using those things amounts to a declaration of war.