My point is actually that it's not possible to do that meaningfully past a certain (rather modest) level of complexity and reuse. How does a library like openssl meaningfully and thoroughly notify all it's downstream users in Debian, Node, Gentoo, etc. what changes to pay attention to?
One important aspect of it is simply sharing that a change is going to be made. It stops a few of those 'if only you had told me first' conversations.