You can, however, change their remit so that they're so busy squabbling internally they won't bother anyone?
Task them with coming up with a single definition, acceptable to all UN member states and requiring worldwide adoption (replacing all other such laws in every country, no exceptions & no additions to list allowed by national governments) of "illegal material", with any stuff that is not on that list being lawful and all categories defined clearly and in plain language.
Oh, and until they've done that, they're not allowed to discuss anything else?
Should keep them arguing for a decade or two. Or ten.
Then we tell them it's got to fit on one side of A4. Another decade.