Comment by johncolanduoni

Even open-source software has to deal with the moving target that is ABI and API compatibility on Linux. OpenSSL’s API versioning is a nightmare, for example, and it’s the most critical piece of software to dynamically link (and almost everything needs a crypto/SSL library).

Stable ABIs for certain critical pieces of independently-updatable software (libc, OpenSSL, etc.) is not even that big of a lift or a hard tradeoff. I’ve never run into any issues with macOS’s libc because it doesn’t version the symbol for fopen like glibc does. It just requires commitment and forethought.