Re: Is a killswitch possible?
I'm inclined to agree. The fact that the GPL3 makes it explicit doesn't mean it wasn't there already.
It is conceivable that Linus, as the person to whom all such contributions are given to incorporate into Linux, might not be covered by the second person pronoun "you" in the GPL, since he is the one giving away that particular derivative work. However, the GPL grants the right to use, copy and modify the entire Linux kernel to literally every other human being in existence. Furthermore, since this is pretty much the Whole Fucking Point of the GPL, it is legally inconceivable that any contributor might not have intended this gift when they made their contribution.