Saying things are a fact without offering proof is exactly the opposite of what ASR is about, and will get stiff resistance just about anywhere you say unsupported things (not just ASR). And to be clear, you aren't very technical, and get so many facts wrong, never demonstrate or support your statements with data, so when you say "It's a fact", I have to chuckle.
This is a great example of you making sweeping statements that are 100% unsupported, and not even bothering with facts. Are you aware of the many models of MiniDSP with analog inputs (there is no "the one")? Are you saying that all of the models with analog inputs sound bad? Or are you saying that the Flex with analog input sounds bad compared to the Flex with no analog inputs? Or are you just making a sweeping statement about devices you have no experience with? Likely.
'Good' DSP can be done for free with your computer, how can you not know this? And, the "will loose some musical information" seems to be you not understanding even the barest DSP basics.
No we don't, you jump to conclusions again, and why do you assume L-R??? Seems like you just made a word-salad.