Sounds a weird one to me. What if the candidate worked at BA for example and wasn't required to upgrade for 15 years? Would said candidate still have a blue book with 10k hours on heavy jets? Mind you knowing EASA........
I would find it more reassuring it it was a change to reflect the new MPL. For example before being issued an ATPL said candidate has to actually log some pic time to get a basic grasp of how it feels before being turned loose on the left seat of a large public transport aircraft.