I don't even bother posting here on my actual account since the last time I was attacked.

Would you like to send me the alleged comment which attacked you? I would like to review it.

disappointed the mods never seem to be around

Just because we didn't investigate your case, that is not proof we are not active on the subreddit. We have been reviewing submissions and comments that get sent to our modqueue along with hosting weekly sticky threads for our users. If you see a post that breaks our rules or Reddit's site-wide rules, you are asked to report it. Just like when you are getting robbed, you're supposed to call 9-1-1 and not just stand there waiting for the police to come. Eventually, someone will see you and help you out. But if you can immediately report the crime, why not report it? There's a report button on the bottom of the comment. By reporting, you will send a message to the moderators. Since I don't know what your actual account is, I cannot comment on whether you've actually reported the alleged offensive comment or not. But this doesn't mean we don't do anything when no one is reporting comments. We often read over a lot of comments on our subreddit and catch any offending posts. There will be times where offending comments may slip through, and these are the types of comments where we ask the users of /r/FairyTail to report. The community's report will help us greatly.

Just shows the kind of community the subreddit has become

As of the time I'm typing this message, my comment is at -1. That's two people. /r/FairyTail has 19k subscribers. That's 0.0001% of the subscribers. You're making an assumption based on 0.0001% of the entire user base? Does this even seem reasonable to you?

there are some really low-quality posts/discussions that pass through

This is a very subjective matter. We've tried implementing a rule to counter low-quality content, but it was too broad and once again, very subjective because it's based on the opinions of the few. If you think a post is low-quality and/or does not contribute to the subreddit, downvote it. That's the purpose of the downvote button: to filter out content that the subscribers believe is not contributing to the subreddit. But if you downvote a post and it's still on the front page, then that means your opinion is in the minority.