It's just a confirmation bias.
People who have it engraved in their culture to chop off parts of baby dicks will use any piece of data that vaguely fit their presuppositions and call it concrete proof.
Muslims will point to any tiny piece of evidence to "scientifically" justify torturing animals for halal meat.
Christians and jews will point to some 50 year old statistics to justify butchering their chirdrens genitals.
Even if overwhelming evidence show that their claims are purely culturaly motivated.
I'm not going to go into how many times people pointed to when science "agree" with their religions, cultures, and traditions, even if it overwhelmingly proves everything else about their beliefs wrong. [I use "overwhelming" too much, need to buy a dictionary]