Been looking into the legalities of it, so it does turn out that interpreted code may be used indeed, according to various sources:
Unless otherwise approved by Apple in writing...
Unless otherwise approved by Apple in writing, no interpreted code may be downloaded or used in an Application except for code that is interpreted and run by Apple’s Documented APIs and built-in interpreter(s). Notwithstanding the foregoing, with Apple’s prior written consent, an Application may use embedded interpreted code in a limited way if such use is solely for providing minor features or functionality that are consistent with the intended and advertised purpose of the Application.
Assuming that the ancient scumm scripting, which mostly directs objects in the game and does not directly interfere with the os-level calls, was most likeley approved for use. I'll try to sneak a peek at the monkey 1+2 demos and see if I can at least list out the files that it contains.