You could well switch that around and go ask the server admins why they support such ridiculously long channel names.
Collective: If we're gonna follow an outdated RFC like 1459 then shouldn't we also be asking why mIRC allows nicknames longer than 9 characters, why very few (if any) servers follow those channel naming/prefixing rules, and why most servers allow more than 3 modes to be set per line. In other words, RFC1459 is old and much of it has been superceded by newer RFC's or by adopted standards throughout the IRC community.
Can anyone honestly answer me why they feel such long channel names are necessary?
