I would hope the other aspirational software distribution systems (pip, npm, et al) ALSO do that, but according to this article, I guess they don't? Not shocked , to be honest
Say I have software written that runs just fine, but has not been updated to the latest runtime of Python or Node (as per your example). Perhaps a dependency I use has a broken recent version, but the old version I use works fine. You remove the package, now it breaks my software. This would effectively make it so that all libraries / dependencies that are "abandoned" by the author or inactive, would be deleted, which then results in all the software that used them to also break.
Unless I misunderstood something?