ABI breaks from security patches for stable releases, especially of Linux distributions, happen how often?

In comparison, outdated npm/gem/pip/hipster-package-manager-of-the-week or docker installations happen how often?

With the former, the burden of updating and testing lies with a small handful of distribution maintainers. With the latter, every single developer has to worry about deployment and maintenance.

While that potential was always there (and people were paranoid about it), in real life it was extremely rare. ABIs don't tend to change much between minor versions on sane libraries. I can't remember it ever happening to me.

False dichotomy fallacy. Linux distributions need to engineer for side-by-side installation of multiple versions and not get tied up to those common locations. nix is just one example as an interesting idea, while Homebrew and stow are better ideas.