The fewer women thing is on Roddberry's head. He chose to eliminate Number One because he couldn't keep Majel in the role. Still the second pilot features a woman in a key role and one shown to be a competent and highly intelligent professional. He does make up for it in the series by have three female characters: Rand, Uhura and Chapel.
I think Noname Given's
"story" is backed up by Justman and Solow in their book. They might even have the memos.