Want to know what's comparable to IDC?
Being Wario Man, Super Sonic, or a Landmaster. No, wait, bad comparison. Atleast they END the game and not stall it. And they don't last forever.
There is no actual comparison to that broken technique. Also, for people using it as an excuse to ban MK, or even to say "if somebody else had it...", you only need to ban the technique. That's it. It's beyond easy to ban and follow as is. Even more specifically, banning it does nothing bad for the game at all.
Banning Infinites, since Combos are pretty much non-existent... as anything usable, is not such an easy thing. For starters, not every character is affected equally like with IDC.(all the more reason the comparison is borked) Another is that not every character has it.
However, it could be maybe fine if they were gone. I mean, different meta and all. It's a legitimate idea. As long as it's not a "You can't infinite this guy", it's not an issue.