You forgot to mention that I do Dr. Toole's laundry on Sundays and his grocery shopping on Mondays!
That aside, you are very much mistaken. If you ever have the fortune to meet Dr. Toole, you will find the myth we are discussing as probably his top two or three complaints. He will go to fair amount of depth on why it is such a misconception to confuse Live with any sense of sound reproduction. And he is not alone. Dr. Olive also starts many of his presentations with the same topic, discussing the "con" that started with Edison saying you couldn't tell the sound of live from his player.
You don't have to take my word for it. Here is Dr. Toole himself in his book, Sound Reproduction: : The Acoustics and Psychoacoustics of Loudspeakers and Rooms (Audio Engineering Society Presents)
He goes on providing references from other luminaries in addition to his own reasoning. I can't fathom how you could have read his work but not learned his point of view here.
As he explains there is no way, no how you can capture the 3-dimensional aspects of sound in a performance hall with a single microphone. Two ears and a brain hear much more than that in that seat. And that forgetting the common system of using multiple microphones and mixing, equalizing, adding effects, steering sounds to stereo channels, etc.
Instead of talking about how much live music helps with one's analysis of a system, we need to spend time learning how music is produced. That is what we have: reproduction systems. Not live transportation. To wit, Chris post this delightful track and its production on ASR Forum:
You see all the microphones? All the headphones being worn? Look at where the listeners are (middle of the track some place). You think they are hearing what each one of those microphones are hearing?
It is high time that we put aside this illusionary assumption and come down to reality that we are hearing artificial presentations of music.
And please forgive my directness but damn anyone who puts down fellow audiophiles because they don't go to concert hall and listen to live music as less of an individual when it comes to evaluating system performance. You want to learn how to evaluate a system technically?
Learn what makes reproduction systems create sound that is not on the recorded media. Compress a song into high bit rate MP3/AAC and if you can't in a blind test tell it from original, don't waste your time bragging about importance of listening to live music.
OK, I feel better now.