I didn’t see an explanation in your link, but I might have missed it.
There are indeed many enzyme products on the market. Yet, as far as I know, all enzymes are in fact proteins, and all proteins are completely digested in the stomach into the amino acids of which they consist. This is, after all, the very purpose of the stomach.
These amino acids are later used by the body to create its own proteins, including its own enzymes.
What all this means is that you can consume as many enzymes as you like, but they will never reach the intestine. They are digested long before that.
Attacking a biofilm inside the intestine is therefore not possible by consuming enzymes.
This is my current knowledge. Of course, there could be exceptions of which I am not aware yet. In that case, please share your knowledge and let us know which enzymes survive the stomach (and, because I would find that very interesting, just how they manage).