While I agree with the sentiment of this article, I strongly disagree that no one cares. As a curious person, I often have a ton of questions about someone's occupation. For me, it is fun to hear people talk about their job.
I just don't like asking about occupation early-on in the conversation because it sometimes feel like socially categorizing people.
Even if the job doesn't have a technical angle that interests you, you can always talk about the human aspect of things: frustration with their management / the funny things that happened to them / stories they heard from their customers / something in their job they are passionate about / how they feel about their job / the things they have learnt while working in their domain.
I think I am using those conversations to try to imagine what my life might have been if software engineer didn't exist. It is pretty much the only thing I was really good at. I am insecure about how much harder my life might have been without it.