The end

What every philosopher, including metaphilosophers and me, should do is follow this advice:

"what Philosophical Investigations says is that when you’re doing philosophy, you’re not going to find out anything. You find out some trivial things, you’ll be under the delusion that you’re doing a great deal, but what you should do is stop and do something more productive. 

But you didn’t stop.

Neither did Wittgenstein. He kept scribbling away! What stopped him from doing that was terminal cancer. Only cancer had that desired effect.
...
nobody really pays attention to his main conclusion: you can’t really do anything when you do this stuff, you should stop it. He basically said you should try to be a therapist for young people who are starting out in philosophy, to get them away from the field and turn them into something more useful. No more of of this fruitless, self-deluding endeavor. 

... 

Do you think people are going to follow your advice and stop philosophizing?

No, of course not. No more than I think that people are all of a sudden going to stop it from being the case that many thousands of children needlessly die in Africa everyday."

 Just stop.