I'm not denying that this is a type of voting system that biases towards certain outcomes. I'm saying that the bias it attempts to accomplish is not desirable as it gives more political power to people with weak opinions than people with strong opinions. I think a good voting system would allow people to express the strength of their feelings on the options, but the system shouldn't reward weak opinions over strong opinions and vice versa. Most traditional cardinal systems accomplish this just fine.
Rather, it entrenches the power to the bland, indistinct body of politics as a whole, which expresses itself through numerous voting choices that are hard to distinguish from one another and are more less the same ideology, which can get large numbers of votes through choices that are only ostensibly distinct. It suppresses votes for choices that stand out from that group.
I don't think that is even necessary because the current voting systems already eliminate the fringes. For instance in many countries there is effectively a persistent two- or three-party system, even though other parties make an appearance.
