What it does is CamelCase the page title. It seems to be some admin having some fun in 2014, and is ancient cruft in 2023. I suggest it be disabled. Any objection?
Topic on Project:Village Pump
Pinging @Krinkle as the creator.
Do you mean "delete" instead of "disable"? The gadget was created as a demo during a MediaWiki workshop, I believe. It is disabled by default. I don't think it was ever enabled.
Strangely, it is enabled by 1000+ users per Special:GadgetUsage, though fewer than 10 of which are active users. In any event, I've deleted it now, since it was indeed not meant as a useful tool by itself.
What you did is what I meant - the use of the term delete IMO would have implied the page MediaWiki:Gadget-workinprogress.js be deleted, which isn't necessary.