That maxim only works out when you’ve got such a solid CI/CD setup that you can roll out to a tiny percentage of users and automatically roll back and notify if they error out.

Move fast and break things all you want if you have such an amazing safety net. But at that point you’re not breaking anything, you’re just letting the real world fill in the gaps in your test suite with an insignificant impact.

Still, not good enough if you’re dealing with money, medical stuff, vehicles, etc. You’re getting into life or death territory there.