My opinion, based upon having taught Jean to shoot and to carry a concealed pistol, is that these explanations are entirely correct.
Jean has difficulty racking the slide of her small carry gun, but, difficult though it is, she can do it. "You just have to know the trick."
The prohibition against double-action (DA) triggers, however, cuts two ways. Yes, it's much easier to learn to shoot a single-action-trigger (SA) pistol, but sometimes the easiest concealment method for a woman just about requires a double-action-only (DAO) semi-auto.
Jean learned to shoot pistols using a SA semi-auto, but her self-defense pistol is DAO, and she can control its trigger quite well. All it takes is gentle instruction, and lots of practice.
Jean did at first believe that a DA J-frame S&W would be her best choice, but while she was achieving proficiency with it, she thoughtfully decided otherwise. I schooled her on what could go wrong and how difficult it would be to repair, and she balked at the relatively slow and complex reload procedure (even with speed-loaders). As noted in the referenced article, bulk (of both gun and reloads) was also an issue.
I concur with the referenced article.