Nothing. Its the simple fact that SOME not ALL PC users are complaining about this. I can understand being angry. But thats how we, console gamers, are about mods. We deal with it so you should to. If anyone deserves to be upset its PS3 users.
Mods are pretty much intrinsic to the fact that the PC is an open platform. You can't point a finger at someone and say "you, you're the reason there are mods on the PC!" Because the PC's an open platform. Bethesda and now Obsidian have made it easier by releasing the GECK, but even without the GECK, a fan editor would be released in short order. Why, in the three months before FO3 got its GECK, Elminster released FO3Edit, which allows for modding, albeit not as easily as the GECK. Simply releasing a PC version at all opens it up to mods.
You have no more right to be angry at the fact that the PC has mods than I do at the fact that your console cost a third of what my PC cost. It's intrinsic to the platform, it's not something someone can decide for or against.
It's not like this situation at all. Here, Bethesda is pretty much slapping all non-xboxers in the face.
But they should be upset with Sony not Bethesda.
Let's say there's two stores. Facehugger's Emporium of Emporia and Indulge's Indulgences. Now, the local gang comes by and threatens to torch both stores if we don't pay them for protection money.
I pay. You do not. The next day, Indulge's Indulgences burns down.
Would you be happy if I told all the customers who wanted to go to your store "Don't blame the gang who burned down your favorite store, blame Indulge, who didn't pay his protection money!"
The specifics of the situation here are totally different, of course. However, your underlying logic is the same between both scenarios, which, frankly, makes it invalid. Unless you agree that I'd be justified in blaming you for not paying protection money.