Fransisco, If you want to learn more, seek out a natural sounding system in Europe, then sit and listen to it. If you want to learn why it sounds natural, talk to the owner, study the gear and the set up. Listening is the key. Take your own music and arrive with an open mind. If it sounds natural to you, it's sound will be based on your memory of the way acoustic music in real space sounds. This should be very easy to grasp.
If you want to learn still more, read some of the threads on WBF that welcome an open discussion about Natural Sound. There is nothing special about such a wheel or above any ability to discuss it. No one is keeping the discussion from you. You had private discussions with David about your internal searching with your own system. It seems you continue to search. David made suggestions and offered advice. There is nothing special or above the discussion there. You either welcome the discussion with an open mind or you reject it outright. It is your prerogative to do as you please and to follow your own preference.