Listening in any other ways than with headphones is not going to guarantee that your listening experience is in any way equivalent to the in-room experience, because you are adding the effect of your own system and room.
I don't figure you for a naivety that believes headphones guarantee anything. Negative logic -- saying what is not the case -- may be appealing to Scott Naylor, but it doesn't really say anything.
Here is more straw dog negative logic, postulating something then telling us what is not necessarily the case. It strikes me as vacuous, a nonsense way to speak.
if you believe that your system reproduces live acoustic instruments to your liking AND you believe the video's author when he says that his recording sounds like what he is hearing in his room (perhaps on some aspects) THEN it does not automatically imply that you will get the same sound as he will... or that hearing it through your system will let you assess the "accurate to live" sound that you crave.
I understand that you like to evaluate a system against live acoustic music, and that's fine, but don't think that a system video listened to your own system is the same thing.
A public service announcement that reproduction of a reproduction is not reality? Thanks, we'll consider ourselves warned.