I don't use alcohol in cooking, no extract with alcohol, no food with alcohol, no mouthwash with alcohol or liquid medicine with a alcohol. And definitely no candies with alcohol.
I had scope once at my dentists the day after I got my teeth removed and yikes. I could taste and feel it.
Putting it in your ice cream is no different than putting it in a glass. However, that is just my opinion. At the end of the day people have to do what works for them.