If you were just looking for the thread by a title, you would not find it. the thread's title has to do with the original question, which was about the DOS cursors being used with the KQ6 Windows game. It shortly got side tracked by the developer of the undither trying to defend why his view of what looks best should be default.
In the end, the undither amounts to someone's interpretation of another's creative piece. Interpretations of existing works is acceptable. Think of all the "Variations on a Theme by..." (fill in whatever composer you wish) there are. But what is not acceptable is to present an interpretation as the original, which is what ScummVM is essentially doing with undither set as default.