I have not found it necessary. They have always arrived on time and in good shape. If they arrived late or in rough shape I would do something, probably use hummingbird liquid safely administered to each individual chick. Why hummingbird liquid? Mainly because I always have some on hand.
I personally do not see any harm in giving them either one of those products when they first arrive as long as you follow instructions and don't overdo it. If they do not need it, you have not hurt them. If they do need it you have helped them. If you give it, you have probably helped your peace of mind, whether they need it or not.