No mention of internet BBSes like ISCA?
Good call! Just spent some time exploring ISCABBS as a guest. But I’m not surprised that this article didn’t mention Unix/Internet-based BBSs. At least in the US, “BBS” implicitly refers to dial-up modems and PCs.
PTT in Taiwan is another great example of a long-running, multi-user system hosted at a university: https://en.wikipedia.org/wiki/PTT_Bulletin_Board_System