Earlier quoted context omitted.
in the same way that you can steal secrets
When I copy your secrets, you no longer have secrets - just information that someone else also has. When I copy your code, you still have the code.
The question is whether the secrecy itself has value. I may perceive that it does, and you may conveniently perceive that it doesn't.
It's a dubious mindset, to believe that it's your own call to decide whether something should be of value to someone else.