You are incorrect. My husband and I tried an experiment. We purchased red seedless grapes and "pressed" them through a juicer, strained out the big pieces (lees), boiled the juice, and sealed it in "seal a meal" bags and froze the "pressed" juice. Fermented (alcoholic) juice will not freeze, but if the juice contains no alcohol, it will freeze...which is similar to frozen juice concentrates. We kept those bags of "pressed" juice in the freezer for almost 2 years and they froze solid...which means there was ZERO alcohol in them.
When we "thawed" those bags of "pressed" grapes the mixture was extremely thick and super sweet.
When we "thawed" those bags of "pressed" grapes the mixture was extremely thick and super sweet.