Why would you think art is good if it failed at its goal? If Coltrane failed at every goal he made for the album, then how is it still good art? Just because you like it doesn't mean it's good. This has been the case with many pieces of music in the past- the Nutcracker Suite comes to mine- where the piece is very well liked, but it simply did not fulfill the artist's goals. You can't judge things objectively going on whether you like it or not. You have to have a set of rules as to what makes it a success or a failure. The music on Blue Train is very much unliked by people who don't like it. Does that mean it's bad? No, because you can't go on the opinions of folks that don't know about it.
There is no magic knowledge. As I said, it is very simple to obtain. The issue that has been pervasive throughout this thread is that you are unwilling to do the work to find out yourself.
How do you expect it? Well, you've mentioned multiple times that it upsets you and that you find it elitist when someone dismisses your opinion on the subject, even though you don't have knowledge of the subject.
The fact that you don't realize the similarities simply shows how little you know about art.
I'm not being elitist in the least. If I was, I'd simply say you'rea dullard and you'll never understand anything as great and thought-provoking as art. I've done neither- I'm saying anyone can understand it if they take the time. Oh, and great link. Please point to where I made any analogy at all. I said they are very similar fields. They are. They intertwine quite a bit on the drawing/anatomy side as well. That does not create a false analogy. I never said science is like this so art is like this. By the way, where are you getting this 8 year figure for? I graduated art school over 8 years ago now- I've been into it for 16 years.
You don't require a doctorate to be an artist. You also don't require a doctorate to be a scientist or a doctor. Do you think that before the colleges of Europe came to America, there simply were no doctors here? No. That's a pretty big fail for that attempt

You ARE required to have a Master's Degree in art in order to teach at nearly any accredited art institute in the country though.
Which I never did

There are a great number of similarities to the fields, as there are to many long-studied fields.
This is again highlighting your lack of knowledge of art. The study of art IS based off of facts. How does this shape/color/symbol take up this space/move the viewer/represent this thing. It's covered. Just because you don't know it doesn't mean it's not real.
There are many differences between art and surgery- duh

"Surgery" is a very, very specific area of medicine. That would be the same as requiring the donkey or bear to draw an anatomical diagram of the lower back. I can have a bear lick a person's would and it will help heal it- that doesn't take away from medicine any more that his splashing paint on a canvas takes away from art.
It's a hasty generalization and in no way true? So people who are older haven't had more time to study a subject than a younger one? That's simple a math problem on your part. You don't even get the opportunity to study many of the topics that older people get to when you're in high school. Take a bite of reality- it's refreshing.
I didn't say that it is good due to its reception. I said it can be liked. Which is different from being good. Which you've had a hard time understanding, as I've had to repeat it several times now.
When did I say it's cool to not communicate a message clearly? Artists DO communicate their messages. The fact that they may be communicating them only to folks who understand the language of art does not diminish this. I feel no need to be misunderstood, and there were very few "legends" that were- that's over-hyped TV nonsense.
You figured out all of these things that aren't true by yourself? Good job! They were understood by their peers and public, and were very much a part of their times. You can't make sweeping generalizations about art history without knowing about art history.
This "logic" isn't embedded in the ideology of any artist who has studied art. Only the ones that gain all their false knowledge of art through the false romanticisms of television and the movies. Apparently that's where you got your ideas from as well. Both come from a place of ignorance.