I always thought of the whole idea about "AHCs" as a pretty abstract (or surrealistic) idea which is open to personal interpretation -- but then again I spent a large chunk of my life on working in the twilight zone of theatre productions; where reality is what you want it to be, at least for as long as the show lasts. (And afterwards you take your dolls and artifacts - that are bona fide representatives of another and unreal world - home with you.)
Here's the thing: In contemporary times we have "artificial social networks" galore, on the internet, and this was hardly something that Doctor LaVey could have been expected to foresee... and yet he did, in some in my opinion rather significant ways. In our time, there's no need for people to spend face time together for actually "meeting" at a level which counts. How this should be interpreted, philosophically, is of course another matter.