I put the phrase "Arab women" in parentheses because I did not know if these women were indeed Arab. I do think from the poster's description that it's safe to assume they were Muslim. And hey, look, here is a first person account of female circumcision in ummm...oh, let me see...THE ISLAMIC MONTHLY. I don't think I'd call that a source that spreads falsities about Islam.
This really happens. Countless Muslim girls are walking around like this.
No one said that it didn't exist, we all know that it does, but people who believe in doing that are in the minority in Islam. Most every Muslim will tell you that they totally disagree with that practice and find it disgraceful. Again, everyone wants to think that every Muslim person believes in terrorism, men beating their wives, genital mutilation, etc. Which isn't true AT ALL!