I've not had any problems. I own the FNP USG in the video and I also own a FNP Tactical. I've had problems with neither firearm. My buddy (and cameraman) also owns a FNP .45 and he hasn't had any problems with the trigger pin.
I've read about the problem on other forums, so it appears to be one of those things that some folks have had a problem with and others haven't. I'm not sure how wide spread the issue might be, but if it were something common I would imagine FN would issue a fix pretty quickly. They are one of the more responsive firearms makers out there, at least in my experience.