These 18-22yr. old young men probably having been reading how good they are, avg. 57 PPG, #4 in nation, etc., etc. I presume Harbaugh is telling team Colorado is a dangerous team, really good QB, etc. And possibly these young men in the back of their heads might be thinking, yea whatever coach, no worries.
Don't think it matters who the coach is, sometimes 18-22yr. old young men don't always listen.
I'm guessing JH will have everyones undivided attention this week.