The Crimson Binome
Hero
The point isn't to end the concept of resting, although a convenient side-effect is that you get the benefit of resting even if you don't declare it ahead of time. The point is to normalize the resource-recovery rate between short-rest and long-rest classes.That highly depends on the DM and would probably lead to players just saying that they stop somewhere for X time till they recharge Y ability (exactly the same as a rest sistem).
If you decide to rest for two hours, so that the monk can get a quarter of their ki back, then the wizard would also recover a twelfth of their spell points back. Since long-rest classes nominally have three times the resources of a short-rest class, it means that everyone can keep going at the same pace instead of one character setting the pace for everyone.