No, because that is not what those settings mean. "No" doesn't draw no power; it only limits to 100mA, because otherwise it makes it tricky to recover an ipod whose battery has run down (we do know how to disable charging but haven't figured out a way to implement it that doesn't risk devices being stuck with no power). "Yes" draws 100mA or 500mA depending on whether it can determine that it's connected to something that can provide 500mA safely or not - if you plug it into a computer it will draw 500mA just fine in basically all situations. Unfortunately nobody has yet implemented Apple's AC charger detection scheme, so we can't currently draw 500mA from chargers, but this is possible (since Apple's firmware does it) and once it's been done it will work just fine.
"Force" overrides the detection, but only after some time has elapsed; it will draw 500mA from dumb wall chargers but when connected to an active host it should stick at 100mA until the host gives it permission to draw more power, to prevent it from overloading the host port. This setting is basically a workaround for us not having implemented positive charger detection yet; once we have, nobody should need to do this unless they have a crappy charger that doesn't actually identify itself as a charger (all Apple chargers identify themselves, and modern smartphone chargers do too).
So.. the reason it's not described like that is because that's absolutely not how it works
