I suspect he means it from the player's perspective. The player says they want to rest in order to regain an ability for their character, not that the character wants a rest because in-game the character is tired.Initiative is a meta-game mechanic that establishes turn order for combat. Resting is a mechanic reflecting the characters taking time to rest and recuperate. I'm not sure how the latter is more "very meta-gamey" than the former unless its some sort of guilt by association with something that 4e did.![]()
I mean honestly all Rests and such are metagamey, as it's never taken because the character thinks they need it, it's always when the player thinks they need it to regain their character abilities. No one "in-game" would take an 8-hour "long rest" in the middle of the afternoon... they'd always take it at night and go to sleep like normal people (excepting the few times in a campaign when a night-time raid of something was required.)