Not necessarily.
For example - customs such as female circumcision (which is erroneously associsated with Islam) are most prevalent in a countries covering a portion of Africa from Somalia to Senegal (east-west) and Egypt to Tanzania (north-south) - with Ethiopia and Nigeria having the highest incidents. It has not been adopted in Islamic societies outside those regions and non-Islamic societies within those areas practice it.
for example----coyote parroted the current islamo big lie----
In fact female circumcision is mentioned in the Koran and traveled WITH islam wherever islam became IMPOSED to places in which it did not EXIST before ISLAM got there. Female circumcision even exists in PAKISTAN----with the "introduction" amongst muslims as a -----relatively new
phenomenon The reason for the big lie is that LATELY
Islamic clerics decided to do away with it. The fact that muslim clerics have muslims parroting this lie is an excellent
example of their INFLUENCE on their "willing to swallow"
anything said in a mosque flocks and their facility in
historic revisionism.
I witnessed it first hand---in a mosque---more than 45 years
ago------the hate rant (against Christians) was so virulent
I almost vomited-------my hosts;, muslims from southeast asia-- educated in muslim medical schools could not understand my objection ----"EVERYTHING HE SAID IS TRUE" !!!!!!!!!! ------besides he had not even mentioned jews --------so what's it to YOU?
muslims are not hitting so hard on JESUS lately. They seem to have stopped about 25 years ago-------when ARAFART
actually went into a church and PRAYED TO "LORD JESUS"---in conversational mode------it was quite a HOOT
PS hindus and Buddhists in southeast asia do not practice
circumcision--------jews do it on boys even over there----but
at age 8 days-----muslims more like age 12. ------the difference is obvious to those of us who have seen the results. Somehow the practice for girls never seems to
have kicked off in IRAN--much. I do not know if that has
something to do with the Shiite thing--------I would not bother
to ask a shiiite right now------because now muslims are trying
to claim they never did it
What IS true is that both male and female circumcision does
precede islam as a human activity----most believe it started ---LONG LONG ago in Egypt. (the female kind-----as to the
male thing----- ??? probably Egypt)