The real SJWs aren't pissed about the weird BDSM reference via Pulp Fiction. They're pissed that "gimp" has ableist connotations, i.e. someone with a "gimp leg."
There's actually a bit of an age gap here, I think. Anyone older than a millenial (and let's face it, probably nearly all of the devs fall into this bucket) is going to probably go with the earlier definition, someone with a gimp limb.
Anyone associating "gimp" with Tarantino is probably a bit younger (or a bit more perverted). If GIMP was actually named in homage to that film, the SJWs would be all "ohhh muh brave fight against kinkshammming" or some shit instead.