I listened to Ernst's YouTube videos about love and the processes of progress in life.
It was heard that the age of 36 was mentioned many times, which was perhaps one of important critical limits or suggestion.
I have several familiar families where a woman started having children from the age of 40 or even later, one relative, a woman, had her second child at the age of 44 and everything is fine, the child was born healthy and the child's mother is fine.
What is the story of this age of 36, is it Saturn's maturation or are there any other factors? It seems that women are able to have children and raise them with their husbands quite successfully even after the age of 36, and no pathologies are noticed so often.
I talked to my relative, who gave birth at the age of 44, a year ago, She didn't even occur to her that She might be too old, her main concern was that maybe the age difference between the first and second children was a bit big and how the children would cope.
One unifying feature of such women is that they have been very good health for their age and positive outlook on life, strong willpower.
This whole idea that male procreation is endless and female procreation drops off the cliff at age 35/36 is just a myth, coming from very old research and probably male hubris. Science does not back it up, and even disagrees.
The popular idea that fertility stops and drops at 35 age for women is based on a very tiny study with a small sample that was conducted, umm, 300 years ago!
Now science has noted that fertility at age 35 for women certainly starts to drop.... by 1-2%, if I remember correctly. Thats hardly dramatic. I've even seen many women get accidentally pregnant and give birth to healthy babies- in their late thirties or forties, because they assumed it was "all done", and got careless.
And oh - scientific research also shows that sperm undergoes mutations 4 times that of egg, and thus sperm from older men is riskier and less fertile in comparison to women..
But of course, pregnancy and childbirth takes a huge toll on women that men never have to consider. It needs way more energy- so I'd say the overall health, energy levels and mental and physical strength of women matters a lot more, more so than worrying about fertility and egg.
A nice essay, adjacent to this topic, which shows that the narrative of the "passive" egg and womb is imagination: https://aeon.co/essays/the-idea-that-sperm-race-to-the-egg-is-just-another-macho-myth
ETA: I'm not sure which video of Ernst you're referring to, so I'm not sure if his context is biological or something else. But usually this topic comes up in a biological context so I answered that way.
If not biological, we could certainly make other points here, and they would be valid for both men and women (for example, just because something is biologically possible doesn't mean it's the best approach)
The topic about pregnancies is a controversial issue, just like politics and religion because it is so deeply personal.
I am sure Ernst will shed some light, but I do think because Saturn matures at 36, it has something to say. SATURN is a dry planet and it rules mature things. Hale Berry was a mom at 50 (or maybe I am thinking of another celebrity) and she plays as an MMA fighter in a recent movie, looking half of her age....and she has suffered from Diabetes Type 1 since she was a kid, a disease that science used to think it decreases longevity.
As women in civilized countries give birth later and later in life, it's consider taboo to think the earliest "eggs" are healthier. It hits a sensitive point. Can we prove that the healthy child born when mom is over 40 could've been even healthier if born early? Not with todays technology...not yet anyways.
I have seen a number of charts where Saturn has caused delays in getting pregnant, but if he's in good shape - the pregnancy should be fine once it does happen.
I've also seen charts of young women with traumatic stories about stillborns, where Saturn was heavily afflicted.
JUPITER is another big one to watch out for as it rules creativity and fertility, and VENUS as it rules the genetic material. When they are in good shape, they help.
There are a bunch of rules that help with a pregnancy, so if a person conceived when Jupiter was strong and maybe in the 1st, 5th or 9th from the Ascendant of the moment, then lots of other difficulties are overcome, regardless of the age of other "astrological issues".