Sorry - this is YOUR opinion. Ask a drummer, and he would probably say that "TIMING is a basic fundamental of musicianship, period." - and he would probably be more "right" than you!
Why are people here so pedantic ? Why can people not say "In my opinion.." instead of stating something as an absolute fact.[/i]
I am sorry, but good intonation IS a basic fundamental of musicianship. If it wasn't, do you think that orchestras would bother to "tune up" before a concert? Ear training is a requirement for first year conservatory students. Do you really think that if Maria Callas sang out of tune all the time she would be considered an excellent singer?
Good intonation IS a basic fundamental of musicianship, and suggesting otherwise is completely laughable. It is not simply my opinion, it is the opinion of every professional musician I have ever met. It was the opinion of Clara Rockmore. It is the opinion of Pamelia Kurstin. I cannot speak for Pringle, but listening to his recordings, I am quite sure that he considers it a fundamental as well.
If you wish to not believe that good intonation is a basic fundamental to be worked on, that is certainly your prerogative. However, ANYONE can play a theremin out of tune. Only a handful can play it with good intonation.