If you do "Golden robot holding a lazer gun in a sci-fi setting, cinematic" it will give you a golden robot that doesn't look in the style of C3PO or Star Wars.

"Droid" is actually a Star Wars term [1], and saying you want it from a "classic sci-fi movie" is asking it to reference a real thing that is well known. Reid is intentionally pushing it that way to fill his agenda and these terms are not as generic as he's making out.

[1]:https://trademarks.justia.com/756/52/droid-75652542.html