I like alcohol stoves. Simple, reliable, readily available fuel.
There is a chart somewhere here on BPL that shows the cross between weight carried curves for alcohol and conventional backpacking stoves, and its somewhere around 5 days or so I think, not sure I remember that well , that the conventional begins to be less weight due to the lower heating value per wt of alcohol.
Depends on assumed boils/day, etc, but basically the alcohol (ethanol) is little more than half the fuel value of conventional fuel. If you do 2 boils of 2cups water per day, at 1.5 oz total fuel usage(wt, not vol), after 5 days you need to carry 3.5 oz more alcohol fuel wt than conventional. At 10 days, you are looking at 7 oz more alcohol fuel, and you are clearly in the regime where conventional backpacking stove is superior in wt, as well as functionality.
For multiple persons that point would occur much sooner because the total use is magnified. So in a larger group alcohol really wouldnt be an efficient consideration at all. Throw in the fact that you dont have to carry all the conventional fuel, as it is available at resupply in the backcountry at philmont, and I think its pretty hard to make a weight efficiency case for a alcohol there.
Of course, other considerations like low temp operation can come into play in fuel choice.
Alcohol stoves are most popular for minimalist short trips, or on trails like the AT for solo use where resupply is only a few days apart, and fuel can be obtained at a gas station or convenience store.