I don't give a ****.
It wasn't a reasonable request, it's a pretentious little quip and just another from a long line of snotty Englishmen that don't like swearing. You don't like swearing? I don't give a ****. I don't give a **** that your kids use the forum. I don't give a **** that you can't simply tell your own kids "that guy swears too much and has a potty mouth".
Boo hoo. One day your kids are going to learn swear words. And all your shielding from the demonic forces of the swear word will be for naught. Once they discover swearing, well it's all down hill from there. Next they'll start smoking. Then sneaking tins of beer. Then they'll be injecting that marijuana and snorting the heroins. They might even start dating people of colour! AND THEN WHERE WILL WE BE?! ANARCHY! COMPLETE ANARCHY!
I honestly think that you need to calm down.