Look he is saying there is no "unconditional" solution, which is absolutely correct. There is a solution, which may work, or may not work, depending on the state of the world when it is applied.
That is trivially obvious though. Of course there is no solution which works at all times, in all circumstances, that is why any proposed solution has specified bounds. To take 5 pages of back and forth to arrive here with that result would be very disappointing indeed.