Earlier quoted context omitted.
How many people drive cars without knowing how an engine works? Or make a phone call without knowing how voice compression for a cellular network does it's thing? Or eats food without knowing how it came together from the supply chain?
This feels like a stretch. It would be impossible for someone who didn't know how an engine worked to repair or improve the design of it.
I think it might be fair to say that a proof cannot be without value if it proves something meaningful to a human, that a human can use somehow? But such proof probably doesn’t belong in a library seemingly explicitly dedicated to human-graspable proofs. Just because it violates the intent.
It’s not like such proofs mustn’t exist at all.