Just like it says, I've noticed that shoulder mounted Rockets have a tighter hip accuracy when not shoulder mounted than two handed primaries do when not held to the users face. Any reasoning?
Same reason why there aren't homing bullets or giant orbital guns or other futuristic weaponry. It's a video game.
That doesn't make as much sense as you think it does. Even from a "balance" standpoint, this doesn't make sense when a Heavy can hipfire a rocket to use it as a PA shotgun and/or MAX killer.
To help counter MAXes probably. ADSing when a scatmax is charging up to you to eat your face out? Not a good idea...