Bit overdramatic there, Xif...
First of all, you act like you can push a button and get out of any combo or anything. an instant fixer...which it's not. It has startup time, during which MK can be hit with any attack. Also, after the tactic, MK can be hit out of ending lag...especially if he attacks out of it.
If you could attack while invincible, there would be no arguing for it. As it is, though...I don't see a real problem.
On top of what I just said, apparently some things hit MK out of his invisibility... I don't have any proof of this, nor have I seen it personally, but that's at least a rumor going around.
Finally, since this is only viable on stage, it cannot be used under the stage or for recoveries etc...
If you ban any sort of infinite stall with it, your analogy to the Gambit glitch goes out the window...since it's not the same thing.
To talk about banning down B, which has no relation to the actual glitch...and banning MK himself...you're just being ridiculous.
Rising pound is actually more broken, imo, since Jiggs could fly under DL for 8 minutes against other certain characters....Roy comes to mind...and never give them a chance to attack without dying.