I think it is apart of steemit even if it is bad. Steemit relies on the very core of free speech. Although some will take advantage by having steemit restrict them would be the reverse thought of using steemit. People will always find other ways to take advantage of the system. It is up to the community to reward them as best they deserve. A few cents I do not think will do harm, but multiple spamming accounts may slow growth of steemit. I believe the growth rate on steemit is slow compare to other social platforms is because steemit is inherently trying to stop spam.

Not saying you should stop doing what you are doing but if you look at cheetah and other curating steemians there are plenty of new accounts caught for spamming. As an idea if someone has zero or negative rating for too long of a period their account is removed or suspended. I do not know how blockchains work in regards to removal but at least be archived to be never used forever is possible.