Phil Hine has a very interesting article on his web site on the whole concept of egregores.
Within Wicca there is another key demonstration of the axiom "perfect love and perfect trust" and that relates to what is actually taught within Wicca. Like Mystery traditions of old, often a new comer to Wicca may not understand what is being taught or even asked of them until they actually advance to a certain level. This can be their own understanding of Wiccan lore as it is taught within the coven or even tradition itself, the level of their own spiritual development and evolution, or even life experience itself.
When working in a group, not fully understanding why things are insisted to do a certain way, not to mention the seeming lack of "freedom" may be perceived as restrictive. From the perspective of a teacher, it can be difficult to explain a technique or reasoning to a student who has not reached a particular level of understand and/or development. From a student's perspective, it can be a "big ask" to simply "trust" without fully understanding the reasoning why. However, with the Wiccan axiom being that of "perfect love and perfect trust", the opportunity is presented to ascertain whether both the teacher and the student can align to such. If not, then it is best to walk away.