No, actually they explicitly state that they also coached it on what they though was good or bad (4:33 into the video). Having said that, I guess we still don't know which game mechanics were coached.
In the interview, they literally said they coached it to have certain behaviors.
I didn't get that from the interview. It implied the bot learned the game itself from a blank slate.
They said "yes, it does that"/"it's been known to do that", not "it was coached to do that". Just as a "We've seen it do that before."
Yeah, just re-watched the clip, I think you're right. My mistake (the word "coached" confused me).
4:33 into the video: "[...] and coached it on what we thought was good or bad".