What happened to Userpedia?

Well, i heared about Userpedia and i wanted to go and check out what it is. However, when i came, i saw a message saying: "Editing will be locked on December 31st, 2017. All content and images will still be available for the time being. Thank you for 10 years!"

Does anybody know what happened and why it was locked? It seems like a pretty interesing place.

All info here: https://www.marioboards.com/index.php?topic=39418.msg1978905#msg1978905