I use Everclear in a backpacking stove... And it is an antiseptic. The extra... well. I leave nothing to waste.
I do like the idea of powdered alcohol for myself. I imagine it will be a flavorless type of spirit like vodka. Good for a mix where you don’t want to carry around a flask.
So far, it looked to me like all they are selling, is mixed drinks, not the pure alcohol.