I don't see the use of that term to be "talking like adults." Indeed, its use in the title of a presentation is indicative of childishness, as far as I'm concerned. The kind of "Ohh, I can insult my opposition with dirty words now!" kind of thinking. The kind that closes people's minds (I've never seen the presentation until now, and thanks to the title, I never will) rather than invites them to learn something.
Basically, the title says, "I'm smarter than you, I know what's right, and if you don't agree, then your position is @#%$." If that's the only way you have to make your arguments, then I don't see a problem with that argument not being made.
Do us game developers really feel the need to be immature about their immaturity? I know that's a sadly common thing among our games, that most M-rated games are actually quite childish and not mature at all. But we don't have to be that way.