The Wikia explains some basic interface elements and mechanics that I assume people will pick up from reading the in-game tutorial and simple experimentation. It's useful for that. I get occasional feedback that people want more basic info like this. Tackling this myself would be tedious.
What I'm more concerned about are lines like this:
This is a basic misunderstanding that players should've figured out in their first week of play. Furthermore, that particular section with that particular line has been there since April and no one bothered to correct it (even though the section has been updated since), suggesting a lack of critical review.Kamihime with multiple attack capabilities should be assigned to the back line as they already charge the Burst Gauge more easily and do not require help from receiving damage.
The Wikia is far from useless, but people here should comb through it critically and at least make sure that what little is there is accurate, especially when it goes beyond low-level explanation of interface elements.