> Are not some of the regulations around the exact state of the uniform are less justified than mask mandates, in terms of maintaining unit effectiveness?
Quite possibly, yes. My experience (which of course is limited: the military is very big--and it's also well out of date by now, as it's been quite some time since I was in the military) has been that in truly effective units, such "exact state of the uniform" regulations are not strictly enforced day to day, for that very reason: any time spent on enforcing them could be better spent on something of practical value for mission effectiveness. There are special contexts, of course: if you're attending a special military ceremony, your uniform will be expected to be immaculate, even if nobody enforces that day to day in your working environment. But that "special contexts" is the point: the regulations are interpreted according to context, in terms of the overall objective of mission effectiveness.
The relevant comparison here wouldn't be mask vs. no mask, but wearing a mask as precisely described (e.g. double-masked, N95, no facial hair, etc) vs wearing some facial covering in a manner which doesn't exactly meet prescriptions. And I'm willing to bet that there's plenty of laxity permitted day-to-day, so long as people are actually wearing a mask.
Quite possibly, yes. My experience (which of course is limited: the military is very big--and it's also well out of date by now, as it's been quite some time since I was in the military) has been that in truly effective units, such "exact state of the uniform" regulations are not strictly enforced day to day, for that very reason: any time spent on enforcing them could be better spent on something of practical value for mission effectiveness. There are special contexts, of course: if you're attending a special military ceremony, your uniform will be expected to be immaculate, even if nobody enforces that day to day in your working environment. But that "special contexts" is the point: the regulations are interpreted according to context, in terms of the overall objective of mission effectiveness.