C++ Package Managers: The Ultimate Roundup
C++ Package Managers: The Ultimate Roundup

moderncppdevops.com
C++ Package Managers: The Ultimate Roundup | Modern C++ DevOps

C++ Package Managers: The Ultimate Roundup
C++ Package Managers: The Ultimate Roundup | Modern C++ DevOps
Honestly, I would argue that git submodule should count as a package manager. I simply list out the repos I want to pull in and update them as needed.
I can see the usability of this depending on the application though. My work is primarily in embedded; I only ever need to pull in a handful of small libraries.
I see your point, but I think that when developers refer to package managers, implicitly that means accessing standalone precompiled binaries that are ready to just be integrated into a project.
With git submodules, unless they are used to track standalone projects or even precompiled binaries, you still have to resolve their dependencies, which is the responsibility of a package manager and the main reason they are used.