At the start of the talk, for example, after acknowledging that this is his first talk, he urges the audience to say "F*** Perl". Breathtaking. Did his company really give permission to deliver such a vulgar talk?

I think guy was inspired by Eran Hammer's talk about OAuth ;) As for company's permission, from marketing point of view it is most important to be talked about, and a bit of vulgarity and strong statements help to achieve this goal, no matter if they are correct or wrong as long as they are resonate with the target audience, so sure, why not.