DaasYochid, exactly as I said, peah nochri not being attached to the person and therefore not coming out of the scalp, the יצה”ר is not be sholet, but the ruling is on the hair that was sewn on the wigs that were out at the time of the ruling, not the wigs of today with their fitted caps and certainly not with the lace as the hair looks absolutely looks like it’s growing out of the scalp because then you defeated the point that “it is not attached to the head”.
In addition, the original source in Gemara talks about peah nochri that women wore, however Jewish girls and women wore additional head coverings as well so we are not talking about women walking in the streets, and likely not in their homes either, with only peah nochri covering their hair. Peah nochri was used as WEAVE together with a woman’s own hair, NOT as WIGS to cover the entire head, to make thin hair look fuller.
The fact is immodesty today is our of control. The length of hair worn by girls today, never mind married women with wigs, was inconvenienable just a few decades ago. I am shocked when I see so many frum women not wearing stockings and short skirts and flip flops…it’s so gross. My husband told me he saw a frum man wearing a nose ring, I was like ok, these will be the new male versions who go together with the frum women wearing no tights and flip flops. After all, there’s nothing in halacha that say a man can’t wear nose rings! Why even when they built the mishkan the men donated their nose rings…It’s a himmel geshrei how low we have fallen. Every coarse, low-class mode of dress is excused that “it’s ok according to halacha”. Lace wigs is just one more proof of the dive tznius has taken in many communities.