I’m not sure which specific post you are referring to, could it be this one? The Initiation Ceremony
Many orders allow self-initiation. The magician Chic Cicero has spent much of his life teaching self-initiation methods for the Golden Dawn. I have friends who have self-initiated into mystery cults when called by certain deities. In fact, if there is no organization that follows a particular path, self-initiation is the only recourse.
There is much debate within the magical community on the validity and usefulness of self-initiation.
Personally, I believe self-initiation is valid and useful, but that group initiation provides certain elements that cannot be replicated. It can also be said that group initiation erodes a magician’s center of self and personal relationship with deity.
It’s up to the magician to determine which type of initiation is more useful to them at the time.