Greys have now become “tools” used by Corrupted Beings. They function in a system called “Hive Mind” and have grafts of technologies in their bodies , the greys are completely their slaves. This is the same system they tried to insert into humanity. Transhumanism and deprivation of spirituality to be the perfect goym.
An egregore (thought form) is a psychic technique of energy manipulation, created to accomplish a goal according to the programming given to it, it is not a real entity, as a gray is.