I've done a fair bit of work for a state Judge Advocate and a number of posts.
Like any other organisation, an AL post will have plenty of stupidity to go around, but this may not be an example of it.
Most lucrative posts have a liquor license. If state liquor department regs prohibit guns in the licensed area of the post, then they have to keep them out or give up the license. I had a liquor license threatened because there was a report that someone had smoked on the licensed portion of the premises.