I had to chime in because I was reading some of those "even non-alcoholic beer has some alcohol in it" comments. All beverages with fermentable sugars in them will have a small level of alcohol in them. In the US the difference between alcohol and no alcohol is .5%. This means any beverage under .5% ABV is non-alcoholic/ alcohol- free. It is common for all natural juices to have .5% ABV. This is do to the presence of wild yeast on the fruit and floating freely in the air. Hell, I've seen some stats that say an orange on the vine can be greater than .5% ABV. That's right, an orange itself. At .5% it is impossible to drink enough of the beverage to get alcohol into your bloodstream. Your body will digest the minuscule amount faster than you can drink. You're stomach would explode sooner than alcohol would enter your system.
If your husband had a previous problem with alcohol then even alcohol free beer is probably not the best idea. The psychological reaction to intoxicants by people who previously struggled with them can cause relapses. As in taste could cause a relapse. But, if he's safe with Kaliber and Buckler, non-alcoholic homebrew is probably alright.
Problems with alcohol are very unique because much of it has to do with the perception of it. People don't perceive orange juice as having alcohol in it, so it's okay. The fact is oj can have as much alcohol as non-alcoholic beer. It's all rather strange. I could go into it more, but the gist of it is, yes alcohol free beer has alcohol in it, so does non-alcoholic homebrew, but so does oj, grape juice, bananas foster, and plenty of other things. There's a fun intersection between psychological dependency, physical dependency, and social pressures that contribute to how alcohol effects people and how we understand what is and isn't "alcoholic."