I’m ready to agree with your view, although I have a small clarification due to my personal experience. You’re largely right if we’re talking about a fairly modern society of an economically prosperous country. Many individuals/families can exchange their talents/intelligence/services for a sufficient amount of money and get access to technology, machines or animal labor (Hooray for the 21st century!). But if you’re poor, you barely have enough to cover the cost of consumables, you’ll inevitably turn to your physical abilities to save money for daily living (Shame on the 21st century!). Therefore, in some situations around the world, an individual's physical strength still plays a significant role for them or their families.
In the context of the Witcher world, physical parameters are definitely important for the craft. Even being a strong and trained man is not enough to handle monster hunting. Witchers monsterise themselves - as you accurately pointed out, it's like combining human strength and animal labor to compensate for their own deficiencies in strength, agility and reaction speed. Naturally, in real life and fantasy world as well, some women are stronger than some men (after all, humanity is very diverse), but Ciri doesn't look too much like a female strongman. And I quite like that she compensates for her possible lack of brutality by using sorceresses’ spells. It’s quite smart. It's, in your analogy, similar to employing the labor of machines.
I think it would be a logical and elegant solution and would develop the ideas of Witcher schools (supplement yourself to be able to combat successfully). I have high hopes for the Lynx school as an interesting mix of training, mutations, elixirs, and magic.
However, I’m a neophyte to the fandom (it's been quite a while since I read (only) the first book and I (only) played The Witcher 3). Which is why I asked the question in the previous post. I mean, I really like the idea, but I can't say how far it is from the lore. After all, if mutations can only gain a foothold on the Y chromosome, for some biological reason, then no matter how hard REDs try, it would certainly be a pretty major change in the world’s logic. But if it's just about Witcher craft suitability, then, like I said above, I don't see a problem. On the contrary, I find it interesting when a character creates something of their own based on their individual prominent traits (Go Ciri, punish all the bad monsters of Neverland!).