Think of it as syncing down to the previous expansion.

In a lot of mmos, once the rotation changes, it's changed forever and people yearn to be able to go back to a previous expansion and the rotations we had then.

Although our rotations have changed even for previous expansions, the essence of them remains for most classes.

For example, if I sync to level 50, I still spam a Rage of Halone combo on a Paladin. If I sync to 60, I still spam Royal Authority with Goring Blade after every 2 combos. If I sync to 70, I still replace those Royal Authority combos with Holy Spirits in Requiescat.

For people who want to go back and finish content they didn't do with their old rotation or experience content as it used to be as a new player, it's still available to them, so there is no reason for them to yearn to go back to it.