I’ve seen this comment or similar many times on HN, and I wonder if it’s a result of the kinds of companies people work for.

If you’re in a “boring” industry, it’s completely infeasible to hire a 24/7 dev team just to cover on-call. Doubly so if on-call requires physical access or security clearance.

If you’re at some multinational big tech firm, sure, I can see how it makes sense to geographically distribute the team so that there’s no “out of hours” support. For the rest of the industry it’s a non-starter.