"Your point, as I understand it, is that since there is one good use case for texting while eating, we should not discourage people from texting while eating in general. That is pretty clear from your post."
I don't think you should discourage anyone from doing this because you don't know what you're talking about.
"The comment was bad because it took a discussion around whether we are ourselves with our tech use and turned it into some kind of reminiscence about annoying mentally unhealthy people. That's a great story, but it has nothing at all to do with what this article is about."
No actually the story pretty much reads like a "I'm sick of these damned kids doing this thing I don't like! I don't understand it and therefore it is evil!" story and assumes that every single time someone uses their phone at dinner they are terribly unhappy and socially unhealthy. My point was simply that he is wrong. There are many completely acceptable uses and sitting there watching someone do something productive or useful on their phone and thinking "this is upsetting! I need to stop this!" really reverses the role of who actually has the problem with unhappiness here.
"If you and your wife are happy about your tech use, good for you. If there are rude people in the world, that's a shame. Okay. Got it. Now can we move on to the subject of the article, which is something along the lines of "are we really happy with our own tech use?""
Um, yeah, my answer was simply. We are happy with our tech use but multiple people want to push a belief on us that we are not happy for no reason. This again seems much less mentally healthy to me.
"Or we could continue talking about how rude the guy at the restaurant was, how rude I am, how people are always nosing into other people's business -- and a dozen other things not related to that. As long as you realize you're changing the topic, works for me."
Whereas you being rude while being 100% disconnected from the topic in any way while twisting my words to the point they couldn't be recognized. Finally the messiah has come to save us all from our own stupidity right?