If you're suggesting that most classic Mac users would not enjoy Emacs, then I would agree. That said, software such as MacTerminal and hardware such as extended keyboards (both from Apple) existed because people were interested in accessing remote applications and services. If someone was logging into a Unix system, Emacs could have been available to them.
It is also worth noting that there was interest in applications that violated Apple's HIG written for or ported to the classic Mac. I don't know if Emacs was one of them, but vim certainly was. Vim certainly does a better job at violating the HIG than Emacs!
