Calling unnecessary circumcision of boys "genital mutilation" sounds frivolous because it makes it sound like you're placing it alongside FGM in terms of its effects and severity. But it is nevertheless genital mutilation, by just about any definition you care to put forward. The men living in the non-circumcision-crazed countries of the world aren't constantly having their blackened rotten cocks drop off from all the dick disease they're allegedly exposed to by having an intact penis, so I don't understand why you would feel the need to do this to your kid without a specific medical reason (of which there are very few that require surgical removal of the skin).
"But if you don't wash it, it gets dickcheese!" and the solution to that is slicing the fucking skin off of it? The clue is in the warning: wash it. Teach your sons to care for their wilberts. Telling them to lather up their bellend in the shower is hardly something that needs prompting anyway.
Personal/intimate hygiene should be part of regular schooling. Not even as part of sex ex, just "how to care for your vessel" kinda shit. Don't drink to excess, walk and move at least 10 minutes a day, stay away from illegal drugs, be careful with prescription drugs, and wash your bastard stinksausage.