I've asked wikia if it would be appropriate of me to permaban said user and I will if they agree or at least give me an answer hinting at it. It's better to not have a griefer and suffer some reputation damage rather than letting them do whatever they want, and I don't really like getting into arguments like this so I'd like to avoid it if possible. I doubt you'd get anywhere with your latest thread about Drama CDs as they'll still claim that they're not the same person
Contrary to their claims, it's not a "niche wiki", Mira Laime (wiki staff) mentioned in her message two years ago that "We picked our top wikias, including the DanMachi wikia, according to pageviews, not current activity. So this means, even though there may not be many active contributors right now, a lot of people are looking at your wikia!", and we score 96.13 in WAM which places us at 137th out of 5000 wikis