Wikipedia actually does appear to have separate pages for every Lord of the Rings character. Frankly I think it makes sense for this series, since there's a truly unusual and effortful amount of worldbuilding behind its scenes, and since it has been so influential to fiction (even regardless of medium).
https://en.wikipedia.org/wiki/The_Lord_of_the_Rings
Anyway, Jimmy Wales doesn't unilaterally make article inclusion/exclusion decisions; there's a whole debate and voting process that Wikipedians use to make decisions like that. So if anyone were to be called corrupt for making ill-fated decisions to delete articles, it would be a bunch of pseudonymous Wikipedia users. And I think they likely acted in good faith, trying to improve the encyclopedia, even though it didn't work out well and wasn't what I would have done.