Yes. But short or long rest isn't anything new. Whereas "roll initiative" makes them available again, regardless of rest, for the next combat. Which, as I posted, further weighs the focus of play towards combat rather than non-combat. ( @niklinna's post upthread was - I think - intended as a joke but expresses the same sentiment.)At least some of the epic boons refresh when you roll initiative, or finish a short or long rest.