That argument would have some traction in the US, where, due to some incredibly peculiar beliefs by some incredibly peculiar people, circumcision took hold as a non-religious custom which has in historical terms started to dwindle relatively recently. Here, not really, since once you exclude that minority of therapeutic circumcisions advised on medical grounds you're left pretty much entirely with ritual circumcision.
No, really. If you were born in the 1940s (like me) or 1950s there was a
very good chance that you would be circumcised. It was a fashion, imported from the USA which was fuelled by the common use of English. At secondary school changing for PE or swimming revealed that
most perhaps 70% of boys were, like me, devoid of prepuce. It was a "favour" performed by midwives during their immediate post-natal home visits.
I suspect that the arrival of Mr Hitler, on the continent, with his warm, inclusive, attitudes towards Jewry, partially prevented its universal uptake, but also the fact that pernicious propaganda probably did not stand much chance of being translated from English.