Thats cause it is new age bull****

Nope, it is because, as quoted from the page:

"By its very nature, the Fourth Way is not for everyone. Gurdjieff
said that secret knowledge is not deliberately hidden, and in some
cases not hidden at all) but most people simply are not interested.
Gurdjieff referred to those capable of receiving the work as "five of
twenty of twenty" - only twenty per cent of all people ever think
seriously about higher realities. Of these, only twenty per cent ever
decide to do anything about it. And of these, only five per cent ever
actually get anywhere."