There is nothing wrong with the BSD license. The whole point of the license is that it protects the developer unlike GPL that screws the developer.
GPL protects the right of the free programmer and user. So no one can use the free things only for money and without give something back. No smart human knowing his rights will work for BSD (for monetary corporations).
BSD has been recognized by the FSF, isn't that enough to end the discussion?
Yes the BSD is needed to close the gap between Open and Closed, as I describe in the previous page. But the community will not work for BSD because Corporations will use their code without give something back. So if we produce an LLVM plugin that will be under GPL.