I actually don’t entirely agree with Górny’s argument that we should use the technical tool of shared libraries to solve the social problem of not organizing the package archive in a way that allows an automatic bump of every dependency on a static library change. But I do agree with a weakened version where “static libraries” is replaced with “vendored code”, and that’s the (part of) problem TFA describes.

(The rest of the problem is that the goals of Debian are incompatible with upstream refusing to support versions of their own code more than a couple of months old. Which they transparently are, so there isn’t much to argue about here.)