Okay so as an admin on the BGT Wiki I had the ability to delete needless categories as well as delete and restore pages and rollback edits. Yet I'm unsure how long this has been happening for but I can no longer delete categories. I still have the ability to restore pages and delete pages but when I was removing needless categories from pages I was aiming to delete them afterwards however the delete button for categories has now gone. Is deleting categories a thing exclusive to the creator of a wiki now? The wiki creator doesn't often edit the wiki when the show isn't airing a series, yet in that time sometimes people make needless categories that the admins used to be able to delete yet now all admins can do is remove the category, leaving it available for other vandals to be like 'What's this' and start adding a needless category to every page leading to the admins having to just remove it again and warn or block the individual depending on whether it is their first infraction of the rules or not. I can still delete & restore pages and rollback edits, yet why can I no longer delete needless categories (I realise I may or may not have answered my own question earlier)?
Edit: When I'm on a category page I now only have four options which are edit source, purge, protect, and talk, whereas a while back I used to also have delete which allowed me to delete needless categories as I stated earlier. Out of interest though did an admins ability to delete categories get taken away during UCP or Fandom Desktop period as I'm fairly sure that before those occurred I could still delete categories. I also understand that if this change happened in either of those periods that such a change could be indirectly linked to it.