Do 2channel only audiophiles shun multichannel (discrete or DSP based) because they find it too complicated?
I'm with Paracrine.
Audiophiles are normal people that want something differentiated for their music system, they are not immune to the logic of purity and simplicity, which is a marketing spin that is pushed heavily by the high end manufacturers. Often this is all about how high end audio chooses to differentiate; popular manifestations are designs with LESS features than low end audio and by packaging this in an impressive, imposing product with a new model number each year or two, and few, if any, LED lights/displays (synonymous with low end). These clearly visible external features and new model number are intended to be correlated by the buyer to the hidden significantly differentiated sound of the box/component. This all combines to propagate the widely held view that a DSP can't possibly play two channel as well as a dedicated two channel amp.