I think it is misleading to label "expected to be responsive within 24 hours during the work week" as "managed synchronously as if co-located". Sure, there are

I think it is misleading to label "expected to be responsive within 24 hours during the work week" as "managed synchronously as if co-located". Sure, there are even looser arrangements that can work great for some contexts. And it's absolutely the case that norms vary. But "within 24 hours" more-or-less puts all timezones on the same footing and is pretty far from co-location.