I've always loved Steely Dan's music, but I'm not enough of a musicologist to understand Walter Becker and Donald Fagen's legendary pickiness in the studio. Wer

I've always loved Steely Dan's music, but I'm not enough of a musicologist to understand Walter Becker and Donald Fagen's legendary pickiness in the studio. Were they just idiosyncratic? Or did they have objectively higher standards? I know my question is a little vague, but it's coming from a place of admiration.