There are negative qualities that give mechanical disadvantages, and negative qualities that function as lateral limiters, closing off a potential avenue of power or advancement, or at least making it more difficult. Sensitive system is a lateral limiter; you don't have to take cyberware to be affected by it, since no cyberware at all is even more of a hindrance.
Sure, it seems to give a lot of points to awakened characters, just for giving up, maybe, a bit of senseware. And sure, like any lateral limiter, it is not going to be taken by characters who depend on cyberware, any more than the hacker will take simsense vertigo or the face will take uncouth. But in the end, I wouldn't call it cheese. Not a right off the shelf negative quality. A good deal, maybe. But so is getting +2 to hit from a smartlink.
It is a quality that you should ask your GM about. Some GMs will house rule it to give less points to awakened characters, or to work for bioware, too. Some GMs will arrange for cyberware to forcibly be implanted into characters with this quality and no implants. So just like it might be metagaming a bit to take it, it might be metagaming to decide it isn't worth the hassle at that particular gaming table.