I agree that these sorts of things are just PR stunts more than anything, and probably wouldn't be happening if it wasn't for the media coverage.
But let's consider the nature of that media coverage, to begin with. It seems that only Apple gets mentioned in Foxconn stories. In some cases, like this story, it makes sense, but most of the negative coverage of Foxconn only ever mentions iPads and iPhones.
These are Foxconn's major clients:
Acer Inc., Amazon.com, Apple, ASRock, Asus, Barnes & Noble, Cisco, Dell, EVGA Corporation, Gateway, Hewlett-Packard, Intel, IBM, Lenovo, Microsoft, MSI, Motorola, Netgear, Nintendo, Nokia, Panasonic, Samsung, Sharp, Sony, Sony Ericsson, Toshiba, Vizio
And yet, only one of those companies appear in every single Foxconn story. Hmm. If people defending Apple here are just Apple shills, what level of bias can we attribute to the negative stories then, in light of the fact Foxconn makes everybody's tech but the stories only paint Apple in bad light?
Again, Apple's just doing what Apple needs to do, for PR. I don't think they're all a bunch of heartless bastards, though, any more than any other company. But the spotlight on Apple's relationship with Foxconn is a bit strange, since every competitor they have that I can think of is on Foxconn's client list.