Yes you can bet the farm that if he interviews at Google, Facebook, Uber, Amazon, Dropbox, etc. they will all whiteboard his ass (if he even gets an interview --because of his age). They don't give a f' who you are or what you did. In my google onsite they didn't even ask about past projects (who cares really?). The question is can you whiteboard?
Yeah, I can't imagine Rob Pike or Guido whiteboarding for their Google interview... Although the thought of such a conversation has me laughing internally.
I created Unix, Plan 9, UTF-8 among other things. Just go ahead and put your dry erase pen back in your pocket sonny.