One could easily not know that, given how many SomethingKits there are in The Apple ecosystem.

polkit does not require systemd.

You made the right call. Polkit is most commonly deployed on modern GNU/Linux distributions so the “on Linux” is mostly redundant.

On a related note, Polkit, itself, has had its own privilege escalation problems:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4034

https://blog.qualys.com/vulnerabilities-threat-research/2022...