Limiting bandwith teaches newbies to be restrained in their behaviour and should remain that way. I have already had to unfollow new people for posting endless memes, endless resteems and even reposting the same content every few days. There needs to be more awareness on the issue and more ways to limit the spam commenters, especially those who don't upvote your post, make a three word comment and then upvote themselves, even as much as $0.90. If they were forced to upvote whatever they commented on, perhaps the capacity for this behaviour would be diminished more quickly