Board Thread:Support Requests - Getting Technical/@comment-31208684-20200529233304/@comment-9605025-20200530072143

I believe this particular MassEdit restriction is put in place by the wiki's JS. Therefore, whether or not you can override it technically depends on the order in which the scripts (the wiki's v. yours) are executed. However, I would assume Fandom accounted for this in their platform design. Even if they didn't, it probably wouldn't be long before the admins catch on. In which case, you might be looking at a lengthy block, if not permanent.

So to summarize, it is not entirely impossible considering just the nature of JS. However, I find it unlikely Fandom would have allowed such a security risk to get through. Even if they did, you probably won't get very far before you get caught.