This curve is such a bad way to deal with self voting as it assumes everyone with low SP account are self voters.

Haha you assume some 'morally higher purpose' in all of this. The reality is Steem follows the KISS principle:

• Distribute everything (80% +) to our self and friends.
• If 80% is not enough... we should multiply our self designated power! How? OK let's make our power ^ 2

Keep it simple stupid - get all you can get ...and if it is not enough square the power you gave yourself...this should do it...