I curse with abandon in front of my kid, not at him, just in conversation. Expletives are part of language, and are just more words for the toolbox, useful in adding a little spice or emphasis to a point.
If a teacher ever contacts me to say they used a vulgar word, my first question that will inform my response, if any, will be "how did they use it, specifically?"
I see our, the US's, childish aversion to curse words as part of its childish puritanical roots based in wilfill ignorance. Guns all day, but ahhhhh dirty words! Ahhhhh boobies! Our response to such things are what's embarrassing.
If you want me to take anyone's censorship of anything seriously in this cesspool, start by advocating censoring glorification of "muh 2A," and maybe I'll take you seriously.