This guide does not suggest to obfuscate your user agent info (instead suggests you use "most common", which will stay that way until you decide to manually switch it again, among other problems); this guide suggests tons of user settings that both break and needlessly restrict your own use of your browser; it does not educate you of why you would set any of this; it calls Linux Mint a trojan OS with no evidence (stating that it uses SystemD when it's optional and containing no substantial argument against SystemD, in fact immediately after listing KISS philosophy as a bad thing); far too much EMPHASIS TEXT; suggesting Ablock Edge, an adblocking addon that allows Google panoptic ads. Despite whatever interests, this likely just discredits privacy awareness.
There are some good things in the guide, sure. A lot of tracking features to disable and good addons are suggested. But the tone and arrogance really puts me, and I'm sure others, off.
My tl;dr-ish guide to privacy:
-Use an open source OS. Better if it uses KISS philosophy, but even if not, you're far better off than using MS shit.
-Keep your identifying social networks separate from your regular use. Avoid Facebook, Google, and any other popular service that benefits from identification as much as possible, if not completely.
-Avoid Javascript as much as you can stand; obfuscate all other software and hardware details as much as possible.
-Use a non-Five Eyes-based VPN service. Do not allow personal connection to such VPN and change service often. Bitcoin is not an anonymous payment method unless you tumble to a new wallet first. Pass through port 443 to appear as encrypted HTTP traffic.
-Avoid Android and Microsoft OSes. Apple is suspect being closed source, but they have been acting in favor of privacy. Use Linux when possible.
-Cover, faraday, and/or remove batteries of devices that contain mics or cameras when possible.
-Encrypt any and all media you own. Keep as many passwords as possible or separated by its purpose. Assume that any infiltrator knows your password generation philosophy and create strong passwords with that assumption (XKCD password philosophy is a good start, but generally longer=better).
-Practice online communication patterns different from your own, and prefer sites that are relatively unknown or that you have not visited often to further obfuscate your identity.
Lastly, know WHY you take any specific security measure, and what threat model your practices fulfill. While you may wish to protect yourself from advanced spying techniques, such as those utilized by the NSA, GHCQ, etc, you're better off assuming these agencies have already compromised your system, and instead work on minimizing revealing information that can be obtained. However, there are many other lower level agencies and private parties you can and should protect yourself against. From copyright trolls to career hackers, strong security practice will protect your individual freedom and security for many years. Practicing even one of the points I have mentioned will set you far above the common person.