Check what is actually in the product
Alcohol-free and low-alcohol beers vary in residual alcohol, carbohydrate and ingredients. They are not all identical.
Removing alcohol changes one part of the picture
Lower alcohol can reduce alcohol exposure, but a beer-style drink may still contain purines from brewing ingredients.
Think in context
If swapping reduces your total alcohol intake, that may be useful. It still should not be presented as a gout treatment.