Instead of being wowed by Sam Altman's title (president of Y-Combinator), you should look through his previous posts to gauge whether his advices are worthy.
some gems from before:
On China: "The other stark contrast is how much harder people in China seem to work than people here, and how working hard is considered a good thing, not a bad thing."
http://blog.samaltman.com/china
On Speech
"Earlier this year, I noticed something in China that really surprised me. I realized I felt more comfortable discussing controversial ideas in Beijing than in San Francisco"
"but it’s possible we have to allow people to say disparaging things about gay people if we want them to be able to say novel things about physics"