I would say that SJWism is basically liberal navel gazing. It's like some shit liberals talk about amongst themselves but most people don't really understand or think about at a deep level (past like don't say the N word to a black person).
I agree that it didn't lose the election, but focusing on it as if it's something that actually resonates as important to a majority isn't really helping to win elections. Even if the principles behind it are widely accepted, the rhetoric itself is a fringe worldview.
I think there is a deep and widening disconnect culturally.
The left seems to see class as solely an economic matter, but I think there is a very important part of it that is cultural.
I think there is a large group of people who make decent money, but feel mocked and looked down on by the leftist elites because they work with their hands.
Cultural speaking, your average blue collar ironworker or machinist is certain to have more in common with the republicans than the ivory tower liberals. Now race is a part of this, but it's more than just that, because in my experience working alongside union electricians and millwrights is that it's not just the white guys who feel this way.