Short answer: it depends on what you write, where you are, and who hosts it. High-level discussion is usually legal. Step-by-step guidance or facilitation of piracy can trigger liability regardless of disclaimers or missing links.

Every homepage for a BitTorrent client shows using it to download a Linux .iso (GPL) or the short film Big Buck Bunny (Creative Commons).

Maybe make the examples in your guide legal but the steps can be the same as for illegal, e.g. "Here's how you can use The Pirate Bay & QBittorrent to find & download Big.Buck.Bunny.1080p.mp4".

Then, when they follow the steps in your guide, they can change Big Buck Bunny to whatever they want to download.

please do not use cloudflare. it’s risking everyone’s privacy and security. they may seem like the most inconspicuous part of your dependencies, but actually are the weakest/ most dangerous part. i think codeberg tends to be supportive and the right place, but cloudflare is 99.9% gonna snitch on all of your readers.

https://www.devever.net/~hl/cloudflare

Each EU country and state has a different set of laws. Think of it this way: if authoritarian jerks always had it their way it would be illegal to use an ad-blocker, send encrypted messages to your contacts, own a house, get a prescription for much needed medicine or even sit close to a person of a different skin color.
In uncertain times use pseudonyms, hide your tracks, keep things clean and tidy and leave your own party early.
But please if you're sure the info you're sharing could benefit most people break free from the abuse of, let's say some Big Tech company, keep it up and count with my blessing. 💪💛

https://en.wikipedia.org/wiki/The_Anarchist_Cookbook

That's legal in the US so a guide to internet piracy certainly would be.

If you want to be overly cautious you can write it as a guide to using the exact same process to download media that's already passed into the public domain. Nothing illegal about downloading things that aren't protected by copyright. That the same process can be used to download pirated media is just a coincidence.

I don't know anything about relevant laws in the EU, Czech Republic, or Germany.

Forget legality, writing such a guide is just signing up for tech-support into perpetuity.

Negate every sentence.

You will not install a VPN. You will not download qbittorrent.

Unless your writing is going to be greatly different from FMHY, I'd partner with them on the hosting so you only have to focus on the writing.

Write a guide on installing uBlock Origin, installing qBittorrent, signing up for a VPN, then binding qBittorrent to the VPN.

That isn't illegal and will have purposes other than piracy.