If this turns out to be true (that enabling calendar editing is simply a .plist setting, that it was disabled by choice and that there are no actual issues with editing) Apple has a lot to answer for (via Pedro Leite via IM)
HACK: Enable adding calendar events on your iPod touch
Created on Oct 11, 2007, 21:43 by Rui Carmo, not updated since.arbitrary, calendar, crippling, hack, ipod, touch