Yeah "throw strikes" is the most irritating to me, it's like saying "get a hit" every single time a batter comes to the plate, there are times pitchers just don't have it that day and they can't throw strikes, yet everyone screams "throw a strike" like it's just that easy every single time.
"Throw a strike" ain't as hard as "get a hit". A strike is what you do. If you can't do that as a pitcher, you're in over your head ... even in little league.