It is a mutilation of the genitals when there is no medical reason, done for cultural reasons, normally Because It's Always Been Done so in that way it is the same.
But what is actually done is often in no way comparable.
A (more often than not) infant boy has his foreskin removed (wrong imo. Unless there is medical need then it should be left until they are old enough to decide for themselves)
Girls however - it's done often when they are several years old, in some cases at puberty, and ranges from the removal of the clitoral hood to the removal of the external part of the clitoris, removal of part or most of the vulva/labia and the sewing up of the remaining tissue leaving a small hole to pee and menstruate through and the mutilated child has their husband ripping it open on their wedding night to look forward to.
so no. I don't think male circumcision is the equivalent of fgm. Perhaps when the fgm is a symbolic nick across the clitoral hood but far more girls are heavily mutilated than are symbolically cut.
That doesn't mean male circumcision is acceptable. Just that it is not the same degree of mutilation. If half their penis was chopped off and part of their scrotal skin then yes. It would be the same level of barbarism.
My husband comes from a culture where boys are ritually circumcised at approx 14 years old to symbolise entry into manhood.
When we married he wanted any sons we might have to go through that. I said over my dead body. We agreed that if we had sons it would be their choice when they are adults.
They are in their 20s and are unmutilated. And my husband no longer believes that they should be.
And no family member or community leader has asked to inspect their genitals thus far.
I don't actually buy the religious argument. God created man in his own image so God has foreskin? Or are we saying he had it and chopped it off? If I was god (and one day, hopefully 🤞🤞...) I'd be pretty pissed off if I designed the genitals then people started taking knives to infants and claiming it was what I wanted. If there was a god, I'm fairly sure he/she/they would have made genitals how they wanted them. Babies aren't 'some reassembly required' kits.
And if there is a god and he gave babies body parts purely so that adults could chop them off then that can only mean he wants us to cause babies and children unnecessary pain and therefore he's a psychopath and undeserving of worship.