Grody's opinion about laparoscopic surgery, I will only respond to his point about the importance of the perineal membrane and PB to pelvic organ support.
Based upon my understanding of the functional pelvic support anatomy as well as clinical observation, I maintain my position that "the perineal membrane and perineal body are not very crucial for pelvic organ support."
The perineal membrane is a single layer of fibromuscular tissue that spans the anterior triangle of the pelvic outlet.
Fused anteriorly to the posterior vaginal wall and attached laterally to the perineal membrane and bulbocavernosus and superficial transverse perineal muscles, a significant portion of what is clinically called the perineal body is actually the muscle of the external anal sphincter.
Because considerable descent (up to 1 inch) of the PB is possible during voluntary straining, the perineal membrane and PB cannot be the main supportive layer of the genital outlet.
Grody's belief that the perineal membrane and PB are crucial for pelvic organ support is indeed just that: his belief.