Yeah, but there’s by lot more security improvement by having ability to apply fix for severe vulnerability ASAP than weakening from possible incompativilities.

Um, we’re talking about undefined behavior here. That creates potential RCE vulnerabilities—the most severe kind of vulnerability. So no, a botched dynamically-linked library update can easily create a vulnerability worse than the one it’s meant to fix.

Also, i wonder why i never brought it up, shared libs are shared, so you can use them across many programming languages.

Shared libraries are shared among processes, not programming languages.