Big surprise genital mutilation at birth because god said so is a bad idea
Looks like they try to control for a lot of other factors, but I feel a bit weird about an article studying circumcision but not featuring those circumcised for the predominant reason that men are circumcised worldwide.
A different way to frame this would be "men who were circumcised specifically for medical reasons tend to have bad sex lives" which imo is a lot less surprising?
[0] https://en.wikipedia.org/wiki/Prevalence_of_circumcision
[1] https://pediatrics.aappublications.org/content/80/2/215
[2] See page 1: https://apps.who.int/iris/bitstream/handle/10665/43749/97892...