PKD has a much stronger claim on that than Harlan Ellison ever did. A writer of great talent who inexplicably chose to drown it in a barrel of pomposity.
Yeah, I've never really bought that. HE made such a thing out of it I think they put it on there to placate him. It seemed to me that his claims of plagiarism rested on very narrow conceptual elements that were too abstract to count as a real rip-off.
See below for another example of this. I really admired him as a writer when I first encountered on him but the more I got to know him the less I enjoyed it :-/
In contrast, PKD stories like Second Variety feel astonishingly like the post-apocalyptic environment ruled by Skynet and the plan of hunting down the remaining humans with terminators. I would be very surprised if Cameron or someone on the creative team weren't inspired by it.