There is an excellent biography of Ozawa at https://biography.yourdictionary.com/seiji-ozawa. He was an amazing talent, who worked extremely hard, contributing to the world’s music. His commitment was obvious. Early in his career, he was criticized for having ascended so quickly that he was not conversant with the entirety of orchestral classical music. He worked for years to correct that, and he was entirely successful. He even went on to learn opera scores, as well, eventually becoming the principal conductor of the Vienna State Opera.
I think few conductors would have attempted to conduct the Oedipus Rex. With all the drama and problems with the Tanglewood performance, he was rock solid and confident that a great performance would result.