CRK does not say the Sebenzas cannot be flicked, nor do they say the Sebenza cannot handle flicking, in fact, you are TOLD by them to FLICK the knife open hard a few times after you reassemble it after a cleaning. They do not recommend flicking, since, over time, I don't care who makes the knife, nor what they claim, flicking
will cause at least some deformation of the stop pin(s), resulting in possible lock issues.
What the warrantee limitation
does mean is, if you are one of these people who is obsessive about flicking, and you sit there all day long, flicking your knife open and closed, open and closed, open and closed, just because it feels good, repeatedly until eventually you deform the stop pin and the lock moves to the right, well, then that is considered abuse and rightfully so, and then, they will charge you a small amount for a new stop pin, oh, the horror.
I think it was CRK that mentioned an analagy, if not, I forget who, in any case it goes like this: A maker of high-end cars, like Mercedes, would of course fix a door under warrantee if you opened it and closed it normally, even if you do it very hard, but, if you like the sound it makes when it closes, and you sit there, day after day, opening and closing it hundreds of times for a few years, and you wear out the hinges, well, that's abuse, not a defect.
It's not flicking per se that is prohibited, remember, they TELL you to flick it hard a few times upon reassembly, it is those few people who abuse the knife with obsessive, repeated flicking, and those people maybe should buy a different knife, if what they really want is something to flick, with actual knife performance of secondary importance.