^^ You are the only one here inserting those cheesy custom DSPs into the conversation. Everyone else is discussing DSPs such as PLIIx and Logic 7, used to expand material to 7.1. I suspect the others would share your disdain for modes such as Jazz Club.
Meanwhile, for some reason, you have decided quad4.0 is only objecting to the use of the silly DSPs, even though he has clearly stated he objects to all digital processing (except, remarkably, multichannel stereo). If you go back and read his posts, you will see that he believes all processing should be done by the player, which lacks tools such as PLIIx and room correction, and that receivers should only be used as amps. He seems to object to more than just the custom DSPs you mention. But, as he has failed to answer the request for clarification, we cannot know for sure.