I'm not saying that the response to it isn't rooted in some deeper fear, but that doesn't mean that the phenomenon they are afraid of doesn't exist.
I'm reluctant to name specific individuals, but there are people who embrace the "SJW" term for themselves. For example, the flair next to the username of this semi-famous developer[0] is a self-description that he is known for.[1]
Perhaps you could argue that he is being ironic, but it is a self-description and he certainly doesn't mean to mock people who identify that way.
[0] https://old.reddit.com/r/linux/comments/2fddvg/im_matthew_ga...
[1] https://ostatic.com/blog/matthew-garrett-quits-kernel-to-do-...
Just like "cosmopolitan" is a neutral/positive adjective by its dictionary definition, but has a very negative connotation in certain right-wing and/or anti-Semite circles.
It’s been known as “political correctness”, “social justice warriors”, “wokeness” and certainly a bunch of other names. The fundamental premise doesn’t change because it’s rooted in some deeper fear.