I think it goes without saying (or at least I thought it did), that the more popular a movie is, the more uproar everyone will make when it is "disappeared".
Since ST:TMP has not fared well over time, I can see how the Director's Cut sort of got a big "meh".
Plus, it's not like the powers that be ever said the original ST:TMP would NEVER released and in fact had been PURPOSEFULLY DESTROYED.