I find the idea of "forbidden knowledge" really childish. Are you 12 reading a detective novel where the protagonist unearths mysterious secrets? Come on.
This is an insulting and remedial interpretation of what this post was about.
It's the internet age. Aside from classified information and very niche topics nothing is forbidden. You can look up how to make moonshine or grow illegal drugs (cannabis, magic mushrooms, opium poppies...) or cnc/cat files for ghost guns on the internet in 5 minutes to 1 hour tops.
Correct. And obvious. So you should have realized that's not what this post is about.