Just significantly out of date, and not a lot of people here to update it. This wiki has been notoriously out of date for as long as I can remember, and when myself and a few others started, it had been abandoned. I'm one of only a few doing any editing right now, and I only have so much time to dedicate to the wiki (even less right now because I'm sick).
At the moment it's like we've got a mountain to dig out, and all we've got are shovels to do it with. It takes a while. But we're making progress, more than half of the wiki's edits ever have happened in the last several months. Considering it has been around since 2011, that's saying something. But don't expect to find it incredibly helpful right now unfortunately.
I do check the wiki for activity multiple times a day, and am happy to answer any questions you may have. I'm also a moderator over on both forums and the reddit, and myself and others are happy to assist there as well. :)