The practical consequence settles it for me: breaking things now breaks trust, revenue, and sometimes laws. A consumer app can ship fast, but a payments outage or leaked dataset costs millions and invites regulators. The mantra survives as nostalgia or marketing, not as an operating principle. The other side will point to AI startups shipping weekly, but that is survivorship bias: we see the survivors, not the dead. Modern engineering culture shifted to move fast with guardrails, feature flags, canaries, rollbacks. So yes, the original break-things ethos is finally dead. I don't see serious teams defending it when downtime is public.