I think the answer is very obvious:
Women like to look good, and they are allowed to look good, al pi Torah.
That being said, however, there is a fine line between “good” and “not tznuisdig.”
The yetzor hara is so strong in our generation! But the truth is, even a scarf wearing woman can look inappropriate at times, while even a woman wearing a custom-made $10,000 sheitel can wear it in an appropriate cut and style. I don’t think there can be a blanket statement made about headcoverings. Each person has to evaluate their own self, community, and goals. And of course, follow their Rav.
As for me, I don’t understand the human hair thing for many reasons… But most people don’t have my sensitivity in this area.
I can’t imagine why someone would want to wear hair that was cut off of dead body! (Most sheitelech come from cadavers.)
And then, that begs the question: Doesn’t cadaver hair cause a problem for Kohanim???