The "reproducible" as in the strict definition and reproducible for practical developer are different concepts. While bit-level reproducibility impacts everyone

The "reproducible" as in the strict definition and reproducible for practical developer are different concepts. While bit-level reproducibility impacts everyone in some small way, normally devs care about whether the same versions are deployed everywhere and work the same for everyone. They ignore issues like function A being before function B in their shared library, but B before A on their coworker's machine. Or the fact that some debug symbol contains a timestamp. In general it's good for declarative management of systems and projects that can be deployed in a repeatable (even if not 100% reproducible) way.