Miriamvee's account is, we can assume, factual and true. In simpler times, she offered a practical, albeit problematic, solution that apparently worked. The account suggests it was a friendly, not malicious, suggestion. Maybe her friend enjoyed the "donation" process; maybe she merely tolerated it. 50 years later, it doesn't matter anymore, but in 2019 we might argue that it would be naive.
That was then and today is much different. 30 - 40 years ago, infertility was a vastly different and much less understood aspect of medical care. And, of course, doctors who were old then (1960s - 1970s) were trained in the 1920s - 1940s or before. It's silly to judge what happened then, it just is what it is.
Viewing the same situation in 2019, the medical options are far more diverse. But, the moral - and not-so moral options are always there, too.
As noted, Ancestry.com and 23andme have changed the landscape considerably. I just learned that I have another cousin, in his early 60s, the son of my first cousin. He was born before his four half-siblings, who were children with my cousin's ONLY wife of 50+ years. The circumstances strongly infer that he was unaware of that extra pregnancy, but not what caused the pregnancy. The son's legal father died 20 years ago and his mother about 10 years ago. There's one possible relative who might know something, but my cousin's siblings (two brothers and a sister) never heard of the mother, so she was apparently not a "steady girl" (in 1950s terminology) or a "bring her home to meet the parents" girl. One-night-stand? College fling? Drunk at a frat party? We'll probably never know - and it no longer matters.
The point is, a DIY donor/surrogate in 2019 should expect that the secret will not survive, in the long run. A fertility doctor whose own sperm impregnated over 50 women was recently revealed, creating a giant mess - half-siblings almost married each other. There are legal complications related to inheritance, citizenship, property rights, custody rights (if exposed