ARR and HW both had uncapped tomes at launch (Philo/darklight and Law/doman), it's pretty much just baseline gear and rng protection for the dungeon drops. Since it's uncapped and also role shared gear it's easy to swap jobs if you end up with more jobs at 70 and like something else better and it doubles as something to do while waiting for omega and the actual locked tomes.

The weekly lock seems to work for them if they keep using it. They have the data that we don't.