In theory I would agree, but in practice (which is different from theory, as the classic saying goes), I disagree; I have another comment here about the perils of debating limits, but I don't think designing the system to handle 500,000-character names would be a good thing either, because we know from experience that if something can be abused, it will. Needlessly making something "limitless" is an invitation to test that --- and in the real world, we know that there definitely are limits even if they are as volatile as "available memory"; and doing something like that is not good for reliability.