Earlier quoted context omitted.
Let's say that argument is fair enough, at least in theory. How many legal disputes have the FSF had recently, in practice, where this turned out crucial? More specifically: how much have they gained by this vs how many contributions have they lost? Until proven otherwise, I'd expect them to clearly be in the negative here.
So you'll wait until the FSF finds it cannot defend the GPL in court and then try to get copyright assignments from thousands of programmers? That's downright stupid. If there was evidence that some third party could enforce GPL compliance on behalf of the copyright holder(s) then maybe the FSF should consider relaxing the requirements. Do you recall that Sony failed to comply with the GPL when they used LAME? The LA…
I'll rather have code which is harder to defend than defense for code I never got.