Not a bad answer but only partially satisfies one criteria. Jabs do end fights in MMA (occasionally) and they don't have to cause a potentially career-impacting serious injury to do so. Jabs also tangibly lead to other finishes all the time - it's hard to name a fight that were finished off the back off oblique kicks.the jab.
And I also added a 3rd one criteria - getting rid of jabs fundamentally changes the sport, getting rid of these kicks changes very little.