It seems to me that possibly the main argument for banning oblique kicks is that while fighters are in the cage with the objective of hurting their opponents to the degree necessary to win the fight, oblique kicks can do much more than end a fight; they can end careers.
I don't consider this a legitimate reason to ban oblique kicks. Just suppose they went ahead and banned them because they carry the possibility, however slight, to end an opponent's career. If that were to happen the precedent would be set. The criteria for banning a maneuver then becomes: Can it cause a career ending injury?
If that becomes the precedent by which we determine if a maneuver should be banned, then suplexes can be banned because had Fedor landed just an inch or two off from the way he landed, he might well have been paralyzed for life. When we saw Gonzaga kick Cro Cop to the head for the knockout and the win, I know that the first reaction many people viewing the fight had was that Cro Cop looked very seriously injured, probably bad enough that he would never fight again. Certainly that type of a kick could end the career of a fighter had the fighter been not quite as tough as Cro Cop, or maybe just not quite as lucky as Cro Cop was to not have sustained a career ending injury from that kick. Even a punch to the head can end a career or even a life. So if people seriously want oblique kicks banned, they need to come up with a better argument.
I don't consider this a legitimate reason to ban oblique kicks. Just suppose they went ahead and banned them because they carry the possibility, however slight, to end an opponent's career. If that were to happen the precedent would be set. The criteria for banning a maneuver then becomes: Can it cause a career ending injury?
If that becomes the precedent by which we determine if a maneuver should be banned, then suplexes can be banned because had Fedor landed just an inch or two off from the way he landed, he might well have been paralyzed for life. When we saw Gonzaga kick Cro Cop to the head for the knockout and the win, I know that the first reaction many people viewing the fight had was that Cro Cop looked very seriously injured, probably bad enough that he would never fight again. Certainly that type of a kick could end the career of a fighter had the fighter been not quite as tough as Cro Cop, or maybe just not quite as lucky as Cro Cop was to not have sustained a career ending injury from that kick. Even a punch to the head can end a career or even a life. So if people seriously want oblique kicks banned, they need to come up with a better argument.