Also, a package manager is not core to a Linux distribution, Really? That seems like stretch.
My point is that calling Python a backbone of Linux because 2 package managers out of many are in Python is a stretch like from Kilimanjaro to Kuala Lumpur.
(AFAIK only Gentoo has the package manager written in Python, second one being historical DNF).
APT, dnf, pacman, zypper, flatpak, snap, nix, yay, pikachu and akukaracha (last two are me being facetious :P) are not written in Python.