Just because people are good at English doesn't mean their English skills are up to giving a permanently-archived talk to tens of thousands of people at the 1st or 2nd most important hacker con on the planet.
I'm all for giving a presentation in the language you're best at. Let machine translation (or manual translation) pick up the slack, not one person's possibly-mediocre ESL skills.
I also can speak German but I avoid doing so when technical accuracy is paramount, because sometimes, small details really matter.
I'm all for giving a presentation in the language you're best at. Let machine translation (or manual translation) pick up the slack, not one person's possibly-mediocre ESL skills.
I also can speak German but I avoid doing so when technical accuracy is paramount, because sometimes, small details really matter.