Whatever works for the person.
If you wanna drink NA beer then go ahead. No need for some people to be so militant on SR about things. Each to their own and all that.
I personally won't as I'd rather just drink 'real' beer and I don't wish to drink alcohol anymore, period. But if you find NA beer helps you remain sober then fairplay to you.
All that I would add is that will you be drinking NA beer because you like the taste or is it because you haven't 'gratefully accepted' permanent sobriety? I haven't read you post/s so I don't know if you even consider yourself an alcoholic.