Not only it makes a distinction between users based on their knowledge of the system, but also on their willingness (or not) to "game" the system.

Some users won't even think about creating alts for voting. They lack the knowledge.

Other users know that they could create alts to vote on their main account's comments, but won't be doing that for a huge myriad of reasons. They have the knowledge, but don't want to jump through the hoops to make more money.

And, finally, the last group know how to game the system and are willing to game the system. And this last group will be the one being rewarded, as they'll still vote themselves and will harvest more reward than the first two groups. And this is wrong.