In order for a good satire to be the most effective to me you need to take a bit of truth and stretch it to the breaking point. That "truth" is false so the bit fails. I think they missed on this one. The "truth" they seem to be lampooning is that Keith is outraged over trivial matters and cuts guests off before they can disagree. I have never seen him do either one of these things.Now lame jokes are nothing unusual, so in itself it is not a big deal. But the ending proves that the writers know how to write a funny skit, so why did they fail in the first half? The most likely reason - pointed out in lilybelle's comment - is also the most worrisome:
It felt scripted so that some NBC exec could say "See, we criticize liberals too." If such false equivalence is the only motivation for a skit, bad comedy ensues.If your goal is to make a lot of friends, perhaps satire is the wrong line of work for you.