That's because each package has specific details about how it can be installed.

Post-processing for a package sometimes has follow up (symlinking, documentation generation, et cetera). Such processing may pre-depend on other processes having completed.

This isn't a Linux flaw. It's a "computation" flaw. (https://en.wikipedia.org/wiki/Halting_problem).

No package manager can determine if it's successfully installed the dependencies shy of actually trying to install. Windows is not immune from this.