Not much to say regarding their first paragraph.
As for their second paragraph, perhaps they are rightfully sceptical regarding Privacy Guides. The body of topics they try to cover is substantial, though. And if TheAnonymouseJoker or whosoever disagrees with them, then they're free to challenge their views.
Privacy Guides isn't any kind of Gospel or whatsoever that you'd have to agree with in its entirety. I do believe, however, that they've done a tremendous job at offering a one-stop shop for those that are conscious regarding their security and privacy. Everyone is free to choose and pick whatever they like from there or not.
I would love to hear about other resources that do a similarly great job at providing at least decent information when it comes to security and privacy; FWIW thenewoil.org exists, however I don't recall any VPN overview/guide/recommendations from them.
Most distros are somewhat equal when it comes to privacy, anonymity and security; with the likes of Fedora and openSUSE known for taking it more seriously out of the box than the other 'big bois', while some smaller distros like Kicksecure are known for their best-in-class[1] hardening that they offer by default.
As for NixOS, it's really its own thing (together with Guix), and thus very different from any other distros. If you conquer it, you would be delightfully met by a system that enables you to do things unheard of in other distros. However, the learning curve is very steep. And perhaps even hardening it to the level that Fedora or openSUSE provide by default might not be trivial.