I still use it occasionally on small camps. These days I tend towards more sumptuous encampments with lots of equipment so I tend to use iron trammels for adjustment instead.
I think a lot depends on whether you are "cooking" or just heating ration packs over the fire. Having spent many years cooking historically accurate food for re-enactment groups over camp fires, I personally appreciate the ability to control the temperature of pots over the fire.
To put that into perspective, I once led a team providing a five course banquet for 120 people over a single trench fire. Sixteen pots, all independently controlled.
This windlass is of course not in that league at all but I still appreciate the fine control it offers.