Yes. Pretty commonly known in our little circle. I'm not a fan. Mainly because I think these 10, 11, 12 year old girls should all learn and experience base-running. Also, how crappy is it to say: "Nice hit, that was awesome. You're benched!"
While I agree completely that young players should all be learning the fundamentals of the game (including base-running skills), it sounds like someone might be getting the wrong message about the value of CRs. My DD is a big hitter, but not speedy. She is a pretty savvy base-runner, but she knows darn well that her team has a better chance to put a run on the board with one of our serious speedsters in her spot on the bases. If you're playing a game to win, give your team the best chance to win. If you're playing to practice skills, adjust your plan to fit that goal.