Re: I must say that sometimes he seems to have a point
"By all means don't make it personal - but if you're of working age and a swear word makes you blue screen, maybe it's time to pass your job onto a grown-up."
I once worked for a US corp where public swearing by exempt staff was likely to be a career terminating experience. Cultures vary. Implying that this is a matter of being grown up or not is, simply, unhelpful - and wrong.