The article has today's date on it, but I could swear I read this exact same article a month ago...
replies(2):
> During the macOS 14 Sonoma beta period Apple introduced a bug in the macOS firewall, packet filter (PF). This bug prevents our app from working, and can result in leaks when some settings (e.g. local network sharing) are enabled. We cannot guarantee functionality or security for users on macOS 14, we have investigated this issue after the 6th beta was released and reported the bug to Apple. Unfortunately the bug is still present in later macOS 14 betas and the release candidate.
https://mullvad.net/en/blog/bug-in-macos-14-sonoma-prevents-...
Was fixed September 22, 2023 it seems (https://mullvad.net/en/blog/macos-14-sonoma-firewall-bug-fix...).
Seems like Apple's product/engineering department doesn't agree with the marketing department about how important their users privacy is.