There are plenty of non-kooky reasons to be in favour of midwife-lead care rather than doctor-lead care. Most women who give birth do not need a doctor - it’s a good idea to have access to a doctor somewhere nearby, but that’s not the same as having the doctor be in charge of the process from the beginning.
The trouble with doctor-lead care is that the sorts of medical interventions that doctors do (eg inductions, caesarians, epidurals) can lead to poorer outcomes for the mother and/or baby if they are done when they are not actually necessary.
Cite on induction:
“Odds ratios for epidural anesthesia, cesarean delivery and diagnoses of nonreassuring fetal heart rate patterns were independently increased following elective induction” - that is, it makes you more likely to need an epidural or a caesarian, and your baby is likely to be more stressed during the birth
Cite on cesareans:
“Infants delivered by elective cesarean delivery had a higher risk for respiratory morbidity vs infants delivered vaginally or by emergency cesarean delivery”
And another cite
"The team studied more than 5.7 million live births and nearly 12,000 infant deaths in the United States from 1998 to 2001.
They counted neonatal deaths among babies (occurring within 28 days of birth) and found that the neonatal death rate for Caesarean birth among low-risk women was 1.77 deaths per 1,000 live births while the rate among vaginal births was 0.62.
The rates of Caesarean operations have been increasing rapidly in the U.S., where they now account for 29 per cent of births.
Experts suggest that the natural vaginal birth process as well as squeezing fluid out of the lungs, releases hormones that promote healthy lung function.
The authors hope the results will promote greater discussion within the obstetrical community about the pros and cons of offering Caesarean sections for convenience.
A French study has co-incidentally suggested that Caesarean delivery more than triples a woman’s risk of dying in childbirth compared with a vaginal birth."
Cite on epidurals
“Serious problems:
These are rare.
The epidural catheter can be put in the wrong place. About 5% of the time it goes into a blood vessel in the back, and has to be pulled back or reinserted. Very rarely a dose of local anesthetic is injected into the blood vessel and the patient notices a metallic taste in her mouth, becomes dizzy, and may go on to have a convulsion or even a heart attack. With prompt treatment, complete recovery from this complication is possible.
About 1-2% of epidurals enter the fluid which surrounds the spinal cord. This frequently causes a severe headache, which may need further treatment. Very rarely a large dose of local anesthetic is injected, causing serious complications.
Other complications include the introduction of infection into the area around the spinal cord.
Exceedingly rarely, epidural analgesia can cause death or permanent paralysis.”
Note that I’m NOT saying that medical interventions should never be done - that would be ridiculous. It’s obvious that, eg Cesareans have saved countless lives when performed when they are necessary. The point about midwife-lead care is that the philosophy is to make sure that these interventions are necessary before calling in the doctors, whereas having a doctor involved from the start increases the chance that interventions will be done “just in case” as if there is no risk at all involved, when clearly there is some.
I suspect that in your sister-in-law’s birth centre there actually are doctors involved - either on-hand out of sight somewhere in the centre or by some sort of arrangement with a local hospital - just not in the faces of the actual women giving birth. I really doubt if any reputable institution would fail to make some sort of plans for in case things went wrong. But the main focus will not be on what to do if things go wrong - it will be on how to make it go right.
Also (finally!) this is all pretty marginal - the vast vast majority of women give birth to a healthy baby and end up healthy themselves, no matter what type of birth they have had.