In our case I wouldn’t say in most customers but it certainly has some issues:
- If there’s a misconfiguration in product accounting the invoice may not be created and the user not notice so you may never create the invoice for that sale or do it too late.
- If you want some extra checks after confirmation it is no longer possible (as Sergi explains). As we understand “Confirmated” means “The customer accepted the order” so the job of the sales person is done but there may need to be some administrative tasks yet (such as obtaining the customer VAT, for example).