Many writers, editors, and teachers have their personal word crusades.  For example, I used to avoid “impact” as a verb, thinking that its recent “verbing” from the noun form sounded unnecessarily pompous.  But I found out that the use as a verb is much older than I once believed, so there are no grounds for my rejection of it in the work of other writers (though I still can’t use it as a verb myself!).  I am more confident when rejecting “disinterested” (which means fair or impartial) when a writer means “uninterested.”  The distinction is important: we want our court judges to be disinterested but not uninterested in the proceedings.  But however much I would like to save the distinction, “disinterested” has been used in both senses by writers who claim that context clearly signals the author’s intended meaning.  Part of effective writing and editing is becoming sensitive to these language shifts.