Excuse me, but I think that you are a little confused in your facts.
First of all, PC-ANSI-based Macintosh BBS packages PRECEDED by years First Class, Telefinder, Hotline and other iterations of the graphic-oriented BBS.
Second, I don't think that it is wise for you to speak for Macintosh users as a whole. Someone is bound to take offense if your opinion differs from their own.
Third, if there was no interest in running Macintosh versions of PC-ANSI based BBSes, then popular BBS packages such as Hermes II, Public Address, MacCitadel, Mansion and Starbase7 would have never been written. Yet they were written.
So clearly, my friend, there was a serious interest amongst Macintosh users to run PC-ANSI based BBBes, BEFORE the GUI became popular.
Fourth, as far as PC-ANSI BBSes primarily being an IBM PC thing, well, of course it would seem that way, because as still occurs in our present day, that platform remains the default computer installation of most businesses, government institutions, etc.
Apple is very powerful, very rich, and very popular, but it still only holds a small fraction of the market, and it was even smaller when Macintosh BBSing was in full swing. Thus, Macintosh BBS SysOps were clearly in the minority as well.
Don't get me wrong. I love the Mac GUI, and I would never switch to anything else. I have been a staunch Macintosh user since 1990.
However, I felt that your comments weren't exactly accurate.