I've started to think of the SJ movement as analogous to the GNU/GPL movement. From a high level, it's easy to see it as extreme and difficult to identify with, but if you give it some time and thought, you start to see the merits of the argument.
Note, one does not always have to agree to think there are merits. Once I saw SJ advocates in this light, it also became much easier to see that much like the software license debates, there are a spectrum of beliefs; Not all GNU advocates are alike, just like not all SJWs are alike.
> The definition given doesn't match what currently feminism is about.
I have not seen evidence that this has changed. I have, however, seen opinions that I don't agree with, but ultimately stem from that working premise.