I'd agree with the possibility of filters.

In general, I also think:

1) People exist who find that sociably acceptable but would find the word itself spelled out offensive. I don't understand them but it may give reason to type the other way.

2) I think there are more than a few who like to be rude, show they can be crude, be one of the lad's etc. but not say so in explicit terms. This provides a mechanism to allow it...

Jon

PS one of my greatest claims to fame in my Hotpoint working days involved the F word. It was about my last day and I'd already resigned because of workloads, just seing time out... I was asked to investigate something like £1000 stock loss (big bolts - perhaps ones that held the motor) while being dragged off to organise a line trial (because material not to drawing had come in and we needed to use it). I wrote the stock off writing something like "Too busy being fucked around by line trials to investigate" on the SCN. Needless to say, I was reported, apologies were given, etc.