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.
