I love swearing. I also actually agree with the OP. It's getting a little old. Some of the presentations I'm seeing really feel a little patronizing linkbait. But you know what I really can't stand? The word professional, used in this context. What does that even mean? I find it such an obnoxious term when used to suggest that the privilege of working comes at the cost of subscribing to some universal etiquette.
I respectfully disagree that you believe that's the definition. The presenter gave this talk and put it on the internet, with what I can only presume is her actual name. So I'd submit that she said things she has no problem with her clients/customers/employers seeing or hearing.
My guess is that when you use the word professional you mean things that you would say in front of your clients/customers/employers, and that's what irks me about the term.
If we're taking that definition, fair enough, but I don't think most of us would accept self-censorship in any public forum on the off chance that a client or customer might see it.
Although I never swear, I can understand when someone I respect swears. It means that they are dead serious about what they are saying. They don't swear lightly, nor frequently. When I hear them swear, I better be taking them seriously, because it means they're upset. I don't lose any respect for them over it, because again, they don't do it lightly, nor frequently. They only do it when they want to make a serious, serious point.
Agreed - my guess is it's getting harder and harder to grab people's attention and swearing is an effective way to 'shock' some people into noticing your headline.