Btw, when I say "an active member of the Austin startup community" - I mean that seriously.
Not only did he teach a class on startups at the University of Texas but regularly came to a coffee meetup for years, attended Startup Weekend demo time, came to Techstars Demo Day, and was generally present. I even got to do the Twilio 5 Minute Demo for one of his classes (circa 2012).
It was always cool to have someone who shaped our industry just hanging out and chatting with people.