I agree that time spent on logistics is a concern. For me, it's not a matter of speed, just that I'd rather be out on the trail and not fiddling around running errands in town. Or messing about trying to get to town in the first place. There were many town stops I missed on the AT because a hitch was involved and the standard pack load of food I was used to carrying on other long trails could easily get me 100 miles. (My first stop on the AT was at Franklin NC, over 100 miles in. I easily skipped hitching into Galtlinburg TN, a common stop in the Smokies.) I got pretty good at washing clothes without soap in a stream or lake and wearing them dry to avoid a laundry stop.
That's also a major reason I don't carry a stove. Finding fuel is an errand I never enjoyed. And it's a reason I don't do food drops, with the need to adjust my schedule around what ever place is holding my package. For some reason, the time spent walking the aisles in a small grocery store doesn't bother me, especially if the store is right on the trail. Or sitting in a restaurant with a large salad.
As Dogwood says, you need to develop your own systems and preferences. Mine make no sense to many very experienced hikers. It's good to see and listen to what others do, and selectively modify and adapt them.