Apparently 'pinon' simply means "pine nut" in spanish. It makes sense as initially the plant was (mis)named pinus araucana.

I’ve definitely heard Araucaria araucana called “monkey puzzle” quite often in English, and many people in Australia mistakenly call the bunya pine (Araucaria bidwillii) “monkey puzzle” as well because they are closely related species and look fairly similar (I’m from Australia). There are several species of Araucaria in Australia though, so many people would also be aware of the Norfolk Island pine (Araucaria heterophylla) and probably the hoop pine (Araucaria cunninghamii). I think some people who are familiar with the different species would probably understand that if you said “Araucaria” you would be probably be referring to Araucaria araucana.

My Partner had a Monkey Puzzle tree (her description) in her backyard in London. Add me to the anecdote list :)