There's lots of arguments to be made either way. I think the 0.5% abv is a limit by the way, "not more than". If you drink enough to contemplate how it adds up, then it's probably not for you.
On the minus side, I'll add that it is relatively expensive, same price as beer.
I did find it was helpful in managing hunger part of HALT for me early on. Na beer contains calories, usually half or a third that of normal beer and half that of regular soda. Diet soda and water having zero does nothing to manage hunger and regular.soda has too many calories.
I think for me, the av quieting effect na beer had was a caloric one. A snack works too.
At this point, it's just a beverage option. I'll get an na beer is some situations where my other choices are limited.