Sure "its in there," that doesn't mean it is in a terribly useful state. Ragu might have a bell pepper in the sauce somewhere, but if someone is really interested in just the bell pepper, handing them that bottle of sauce and saying "hey, look on the label, its in there" is pretty foolish.
Given that many kenpo schools barely teach how to fall anymore, I'm hard pressed to say that it has an extensive groundfighting curriculum. Given the fairly straightforward way kenpo presents its self-defense concepts, I would expect to see something a little more explicit that a conceptual extension of a standing technique to inform the student. We have explicit defenses against someone kicking you when you are down, against jujitsu finger locks, against pro-wrestling holds, and somehow that vocabulary managed to ignore the example of a guy sitting on your chest, the move that every big brother ever figured out by themselves.
I don't doubt we can extrapolate something from one of the explicit techs, and several people already have, but many of those people also have backgrounds in arts that cover those ranges, allowing them to develop the skills to utilize the conceptual movement. Beyond grappling, the explicit weapons curriculum is fairly marginal. In Tracy's Kenpo a bunch of borrow forms does not a weapons system make. In AK the double knife and stick forms are well, not awesome, or at best make guys from weapon-centric arts blink and say "thats.... nice."
I don't think there is anything wrong with saying that an art has its strength in a particular range, they all pretty much do, but trying to be all things to all people is foolish.
I wish that I could find it, but there was a clip from a Kenpo GM, doing a standup tech. from the mount position. Now, I'm not taking anything away from this persons Kenpo, however, if we look at the position of the bad guy vs. what was being done, I would have to wonder how effective this move would be had the badguy been mounted like he should have.
This is why I'm having a hard time figuring out how a standup tech. can be applied with effectiveness on the ground. I was hoping to discuss this at some point in this thread. If someone could take one of the standup techs and make it work on the ground, I'm interested in hearing it.