I wouldn't include those on the same list. It makes sense for various (source-form) libraries to be maintained and updated and made available independently of the OS and uniformly across operating systems. I don't see this as undermining Linux distributions - as these are used when you're making your own builds anyway.

Otherwise - yes, agreed, and it's also about redundancy and bloat when installing software; and some entities writing software that can only run on their own docker image; etc.