Distilled ethanol is a solution as it isn't usually more than 95% pure and alcoholic drinks are a solution but pure alcohol is not. They really need to be more clear.
It is Pedantry Friday today, isn't it?
Would have been easier to say
Chemically alcohol may not be a solution, but
Beer is a solution.
Would have been easier to say
Chemically alcohol may not be a solution, but
Beer is a solution.