Yep. Basically, the batter is allowed to step out between pitches. The one exception is if the pitcher is stalling, the batter may call time and step out again. But if the pitcher has to deliver the pitch in 12 seconds, then the batter has to be back in the box and ready and the pitcher can't stall so the batter cannot call time and step out again. Again, this issue goes away entirely if the 12 second rule is enforced. The fix to this problem is so maddeningly simple that I can't believe it's a point of discussion, really.