Barbara Hershey “Seagull” also refused to put diapers on their baby. This became a huge problem on set as the kid was urinating and defecating all over the place and this bothered cast and crew. Both David and she were strange ones.
The 60's and early 70's were weird in Hollywood. I remember when I was little and we lived in Malibu, Peter Fonda and his family refused to wear clothes. They drove all around PCH in an old pick-up, completely naked.