The way he wrote was a bit confusing and can give a false impression on other communities. If you are promoting a community, you have do it clearly. If you are going mention other communities, you have to be mention them on an equal level.
We are not the Batlte Forums comparing characters from existing series to create debates that boil down to one's opinion (No one cares if Enel could beat Ace or Naruto could run a gauntlet of Toriko characters) instead we make those characters and have them fight comparing each other strength and weaknesses.
That's why I mention if he didn't like something, he could just say it that way instead of nobody cares for a particular task in another community. You are going to offend someone unintentionally.
As for the new users, I was confused on what rules he mentioned and what barriers they had. All I know is that battle users historically have hindrances in getting accepted into the community. RPGing is more long term and invested than casual. With our demographics high school to college, most of our folks are short term because that phase has so much change. You rarely get long term users. Wiki editing and battle community are more open than the RPG community as it seems because anyone can jump in easily and quit without so much effort. Only a few rules, you don't have to be an expert in grammar/HTML coding or debating.
There is more to wiki editing than cataloging information and summarizing pages. Our community is built with wiki pages, so you can attach lists, reviews, blogs, etc. It serves as a foundation, not an attachment. The images with captions are one of the most frequent attractions in the wiki community, attracting new users which is where most of our users come from, browsing images or wiki pages.For the battle community, it's introducing new anime and manga with the debates.
Each community has their purpose which contributes to the overall community: finding a place with fans who love anime and manga.
To some others, it looks daunting to enter the RPG community. The same could be said for wiki community and battle community. Everything can be daunting to new users. Some get into other communities easily while others cannot. That's the reality there. That's why some communities have more users and resources than others.