Do you actually have a question?
If you're asking what we think, if the one that germed is fine, don't worry about them. The top layer being dry is not terribly relevant; it's more a question of general moisture/humidity - as long as the entire thing didn't get bone dry. Many people keep their soil too wet when starting seeds - moist is good, wet is not, especially once they sprout. Just make sure they don't get dry all the way through.