The GlitchDex is powered by an extension, which parses the raw content of the subpages to generate the finished output. Adding wiki markup to the raw data would break the parser.
However, this extension broke with a recent MediaWiki update. The extension was poorly created anyway, and will need to be thrown away and completely redone. When this is done, all of those subpages will be rewritten eventually. The plan will be to use native wiki template language in place of the custom parser the current extension uses, which will cut down on the complexity of the extension.
On a more general topic, there is a group of users who are not sysops who have the ability to approve edits, the QC (quality control) group. It's probably possible to have a group which can approve their own edits, although I think anyone who can be trusted to bypass approval can likewise be trusted to approve the edits of others, so maybe we can just expand the approval right to Member+ and above.