thus on one hand, he (and his company) is using Drupal to develop websites, on the other hand, he is also enhancing Drupal. As an open source project, Drupal is owned by the Drupal open source community. Drupal is one of hundreds of open source CMS(Content Management System) projects. There are also many commercial CMS packages from all the major software vendors like Microsoft, IBM, Oracle, Adobe, etc. Nowsdays, behind any decent website, there should be an CMS powering it.
He is a nerd of course, should be a good fit for many Silicon Valley companies, like Google, Facebook, even Apple. He didn't mention why he returned to China. Furthermore he didn't say which school he atteneded here.
I agree, none of 3 girls there are good fit for him. He made the right decision to leave. He's very confident and knows what he wants. From this point of view, I respect him and his decision. However, at his final speech, he should at least say thanks to the 3 girls at the final stage. At least those girls made the efforts, which should be noticed. I'm disappointed especially considering that he got full college education here and so many degrees.