The site recommends OpenSUSE and NixOS, both of which are much less used distributions without as much package support. This is not to say that they aren’t private or secure, they are, but there’s downsides that just aren’t touched on in the article recommending them mainly, that a lot of the most important tools Privacy Guide reccomends just aren’t natively available on them. For example, I use OpenSUSE, and I can’t use Mullvad, a recommended tool, because the package for the VPN is broken on my system, and I can’t even access the error message logs. I am sure there is a lot of software Privacy Guide recommends that is available on Arch- or Fedora- or Debian- based systems that aren’t available on other systems they recommend.
I think the fix to this would just be a warning or note, such as “Only use these if you are willing to give up certain programs due to their limited package availability.”
I love privacy guides and have been an active member for years, and want it to be effective at getting people into privacy, but this hinders it. I also still love OpenSUSE and I am honestly tired of distrohopping so I might just switch to IVPN or wait for the issue to be fixed.