I just sold my third Kel-Tec PF-9 this week. These little pistols are flying on the shelf in my store. Each of the purchases was by an LEO for a BUG.
Assuming you are referring to my post. The thread you referenced is three years old. As mentioned earlier, the early models did not operate well. But KT figured out the problems and fixed em. I only have first-hand knowledge of 4 owners (myself included), that have recent model pf-9s. All operate perfectly. Limp-wristing is fact, not fiction. Almost any semi-auto can be induced to fail with a weak enough grip. Not just "crappy" guns. As far as defending kel-tec, they are what they are. A company that makes inexpensive, highly concealable, back-up guns for the budget-minded consumer. I hear they are great to deal with if you do have warranty issues.http://www.xdtalk.com/forums/non-xd-handguns/63152-kel-tec-pf9-problems.html
There seem to be more than a few people having issues with them.
Limp wristing is a bunch of crapola, and an excuse used for why crappy weapons malfunction in my opinion. An arguement often used by happy owners to defend companies (Kimber anyone?) that may have shotty quality control. Even a broken clock is right twice a day.