Being able to upvote yourself is important. Does it open opportunity for people to use it in profiteering ways? Yep, but that is just the nature of crypto, people are after coin. Those people are no less par of our community. It's like that one drunk chick at every party that is so annoying she gets the lable "that one drunk chick... No one likes it, many want her to leave but she is not really doing anything wrong. She is just not well liked for it.