Imagine being a Deltarune fan that had to wait through the four years gap between ch2 and ch3+4, that has been active on the fandom and theories, and when ch3+4 release and you're all invested and enjoying it, you then get hit by this.
Unmatched.
it's FAKE. one of the wiki admins fabricated the entire page's edit history, it was created 2 days ago
there is other external evidence too (the admin is a deltarune fan, the writing style of the user doesn't match with their posts from 2016, etc.)