"These findings provide compelling evidence that acute alcohol consumption decreases GLP-1, a satiation signal, elucidating alcohol's 'apéritif' effect." This could increase hunger and cravings (including for more alcohol).
Even worse, it is consumed in liquid form, which also bypasses some satiation mechanisms in the body.
There's a reason tour de France riders get most of their replacement calories in liquid form
Glucose can go right into the bloodstream (?), but ethanol needs to be reacted (taking energy) to turn into blood glucose.
This is a confusion I have about calories-in-calories-out in general, fat/carbs/protein are all metabolized with different (and variable) efficiencies. Even pro-CICO folks agree not to count ingested calories that can't be metabolized, but that's just one spot on a gradient to draw a line.