In this entire post, bundling refers to software that includes a specific version of each library in its own binary, while shared refers to software that uses the system version and requires dependencies to be installed out of band (possibly by the package manager). They are competing ideologies.
Both approaches involve shared libraries, which are simply dynamically linked objects. The article outlines a problem of distribution, not linking strategies. You're using shared libraries in both contexts.
This is a misuse of well-established terminology. To say this is an ideological issue is a balance fallacy, as the package management approach has long been shown superior (by the likes of e.g. Nix and Guix).
