But as I said..
1. Consolidate existing information (currently split between 2 or 3 places.)
2. Provide accurate/vetted information for players as some of the Diku Wiki is incorrect or is player speculation.
3. Provide a place that new players can park and learn the game before they get subjected to a million shitposts.
That was my reasoning. Take a scroll down the page and look at the posts and you can see why it would be preferable for new players to not have to go through Dios to get to learning materials. Having said that, the Dios wiki software is easier to use for mapping and so on which is probably the no. 1 reason why it's easier.