Thanks for that text.
Yes, code is algorithms ready to be implemented in a machine. And algorithm is knowledge. Recipes are algorithms: if you want to cook that cake, make this and this and that… Recipes are knowledge, you can learn them. I don’t know how to express in English the difference between “savoir” (written knowledge, coded as information) and “connaissance” (which can mean knowledge acquired, disgested by a human being).
Code is human knowledge written in a way that can be executed by a machine. Algorithmics is a branch of mathematics. So it’s formal knowledge.
It’s true that code is a special kind of formal knowledge. If you don’t understand that knowledge, you can still use it, via the object where it is implemented.
A mathematics book also contain formal knowledge but if you don’t understand the content, what can you do with the book? Knock on your head? 
Put under your monitor to raise it? 