I think the point is not that its "legal" or "illegal" after the fork but rather to inform people of what is happening so they can be more informed about who they are voting for. While what she is doing is definitely allowed it puts a drain on the daily reward pool that affects all users of this platform. It is similar to informing the people of certain individuals or corporations using legal loopholes to avoid taxation by their governments, the point of spreading the information is not to stop it but rather make people aware it is happening. Sixth day voting is a sneaky way to make money, it keeps posts from hitting the hot and trending pages so no one notices and allows you to maintain your reputation as a "good steemian". I dont like it but as you say, the steem economy is no different than the fiat economy.