I guess it depends on your POV... After all conversations are built on top of sessions...and many systems have been built that did not need that... even if we could argue that they partially reinvented it... Some people feel that to have a truly stateless and scalable architecture this kind of state management should be implemented as a client side only thing.
And regarding the LIEs well... I guess it is only impotant if your ORM has such a feature/limitation.
It is all so relative...