How is this proof of that? They just found something that worked through trial and error.
As opposed to... what we do?
Build a model, predict a particle and verify its existence?
That's a relatively recent development in terms of systemizing knowledge discovery. Prior, people literally just mixed stuff together to see what happened.
Non-human animals also find random things that work for whatever it is they're doing.
Chimps eat a plant called Veronia that kills gut parasites.
Does it mean chimps are smarter than humans and are also doctors?