These are good points.

And i do not negate these points when I consider this--heavy metal could be said to have iconography, music, testimony, congregation, leaders, fanatics and fringe members etc. Most any sub-culture could. To varying degrees, perhaps. Role playing games, body modification, hot-rod cars, political activist organizations--there's a lot of sub-cultures out there. Remember I just used the word CULTure. However, most sub cultures that you might care to name do not have a sacrament so powerful nor so reliable as dmt.