I have seen commentary to the effect that it is actually the male partner of the labouring woman and not the presence of male HCPs that can inhibit labour, the reason being that stress hormones of the male partners if they have never witnessed something like labour and childbirth before can affect the woman. Presumably the male HCPs otoh, who assist at birth day in and day out, are not as anxious?
I wonder about the danger inherent in male partner presence of centering male partners during labour, especially given that pregnancy is often the time in a relationship when some men begin abusing their partners.
Is it really possible for a man and a woman to leave behind them all the issues that there could be in a relationship, all the stressors, all the irritants, all the entitlement and assumptions of at best mutual attention and at worst the assumption that the man is the centre of the universe, and proceed to an environment where the woman needs all the focus and needs intuitive support. There are relationships where the woman is expected to provide that to the man 24/7. I know there are anecdotal accounts of men who were completely unable to get over the experience of a team of people paying them no attention whatsoever for the hours that the process of birth takes, or the experience of seeing their partner and the baby giving each other their completely undivided attention as they bonded.
At a pre natal class before DD1 was born there were two couples where the fathers were not going to be present in the labour or delivery room, by mutual agreement with their partners. They were going to be waiting in the hospital and the mothers were going to have a female relative with them.
It felt very counter cultural at the time, but I can see how some men would be more trouble than they were worth in a delivery room, and I can also appreciate the preference for a female supporter (which was the case for these men - they were not concerned about fainting and their partners were not concerned they would make nuisances of themselves but they had together concluded that this was a female experience) as long as that person was able to refrain from overwhelming the mother verbally, and was able to step back and allow the mother and the birthing process and then the mother and baby to be the centre of the universe.