Never overestimate Roddenberry's writing skills.
But you can see some of that TMP novelisation stuff in early TNG and a bit in TMP as well. He was very into sex. Fairly free sex at that. Can't say I disagree there of course!
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist