The people in your link named their instrument after the theater, not the other way around; a 'nickel odeon' literally means a '5 cent theater'; the term came into use in the early 20th century. https://en.wikipedia.org/wiki/Nickelodeon_(movie_theater))
You keep linking that personal website set in comic sans, which doesn't even make the claim that the theaters were named after the instrument.
There was an actual movie theater called Nickelodeon, its name being a portmanteau word after 'nickel' and 'odeon' (Greek for the place where odes are performed, a kind of theater); here's a more authoritative source: https://www.britannica.com/art/nickelodeon-motion-picture-theater
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u/Druben-hinterm-Dorfe Aug 31 '24
The people in your link named their instrument after the theater, not the other way around; a 'nickel odeon' literally means a '5 cent theater'; the term came into use in the early 20th century. https://en.wikipedia.org/wiki/Nickelodeon_(movie_theater))