Updated the thread with the post War_hero had made on the old thread, courtesy of Fish.
To clarify, War_hero was a dev for a bit so he had access to the game's source (my bad if the terms aren't the correct ones, I know jackshit about programming), that's how he was able to come up with that.
In case anyone is wondering, that change can only be made by hampa (or other current devs), you can't use that information to change your game's settings and remove the joint limit.
About it being rare to get to the joint limit:
It really depends a lot on your type of gameplay. Those who go for realism have had this problem for years now.
I can say for sure that it has limited pretty much all of my last replays, and if you want more recent examples, Swex seems to be hitting it in almost all of his replays and recently with Largekilla they even reached it in multiplayer.
Even if it is argued that this is just the problem of a too small group to be taken into account, it has to be realized that it has been keeping that group of people from making replays with a ton more quality, and replays are one of Toribash's best advertising methods. I'd say that more than a couple of few people got into this game after seeing amazing videos/replays on youtube.