This is just stupid fairytales and pure BS. It doesn´t matter if anybody take pictures, as when explained the right way, immigration will do nothing. There are no such support in the law, that states you are not allowed to help your wife in her business. Sure, you can´t be there day out and day in, as that would be working without a WP as well as stealing a job from a Thai person.
It´s all a balance of what is needed, and what can be seen as work. Sure, I know things we have read in the news. One foreigner got in big trouble for selling chicken and papaya salad together with his wife, but that guy was standing there everyday. Naturally it looks like he is working full time. Helping and stealing a work is not at all same. before I put everything together in one company, I helped my wife to build her shop, ran every morning to buy things and deliver products to the shop, as well as sometimes sit 30 minutes when she ran an errand. Nobody said anything. We even asked the police if we could do like that, and they said yes too.
It´s just time to stop with this talk and scare people from doing things. The only thing necessary is to be able to differentiate a job and helping. End of!