The issue should be whether jumping should be allowed or not, not whether or not a specialized stick should be allowed. Yes, it takes more skill to jump with a full cue, but that means people who are able to do so are still escaping good safeties without having to kick, while everyone else has to kick, which it seems to me is the real issue, not how easy the jump is to do.
In golf you have different clubs for different shots. We have specialized break cues for the break. Saying jump sticks have no place in pool when jumping is still a legal shot, makes no sense.
I'm all for not allowing jumping at all, or keeping it the way it is. Either way, it's fair to all players. But if we are going to get rid of specialized sticks for certain shots, then we should all have to break and shoot with the same cue, and we shouldn't allow adding/removing extensions during the match.