well, there is iniquity already established in the existing system. I don't think that this rule is intended to make us vote at 100% all the time, I think the intent is to make it less profitable for a whale to send out 1% votes on 1000s of posts a day in order to collect curation rewards.

Some of these accounts that they are trying to discourage have Voting Power Percentages down in the 30% range, and even though their vote power at 100% would be huge, at a certain point it becomes tiny. By making this reduction, eventually those votes become dust and the profit goes away.

I think (and this is conjecture, nothing more) that the effort is to make people be more focused on what they vote on for curation rewards rather than simply having the shotgun effect of voting everything and see what you catch.