See below from Australia, it appears as the Grand Master has directly defined what is considered 'esoteric' within the confines of his definition of Freemasonry. He also outlines what is not "esoteric" as
"occultism, sorcery, alchemy, astrology, profane mysticism, transcendentalism, supernaturalism, druidism, rosicrucianism, satanism or any concept or movement related to any of these."
The argument for this edit was that there were certain lines and teachings occurring that were about as closely related to Freemasonry as I am related to the president of the United States.
Charges are that certain Freemasons were using the term 'esoteric' as a way to teach/preach non-mainstream religious tendencies and as a recruitment tool within the order.
The glaring issue is that of course this stifles any discussions of the above and how Freemasonry works and is inspired by them. Rosicrucianism for instance is still a topic of debate and its influence on Freemasonry (some believe it was the foundation, others deny that as its foundation on faith, hope and charity). The issue with this edict is that stifles these types of debates, academic research, etc.
On the other hand the use of Freemasonry as a recruiting tactic for some cult should be addressed as it has the potential to bring serious shame to our order.
I don't believe that this edict was the right approach to curb illegal recruitment, but will cause stagnation in the spiritual growth of a Freemason, no matter path it may take him.
S&F,
-Bro Vick
GRAND MASTER'S EDICT
ANNOUNCED AT THE GRAND COMMUNICATION - 13th JUNE, 2012
On 12 May 2010 the Board of Management passed a resolution stating the principles governing esoteric research. These principles are central to the practice of Regular Freemasonry. In order that there be no doubt that they bind every brother and Lodge in this jurisdiction I have decided to make them the subject of a Grand Master's edict. At my request the Board of Management has rescinded its resolution so that it may be substituted with the following edict which takes effect immediately.
1. Authorised, official Masonic Education and Instruction is only 'Regular' when applied to Free and Accepted or Speculative Masonry (Regular Freemasonry).
2. Because of the widely divergent interpretations which can be placed upon it, I am concerned about the unqualified use of the word "esoteric", or any of its derivatives or extensions, within Regular Freemasonry. Such use needs to be avoided as it has been and can be misconstrued to the detriment of the Craft.
3. I encourage all Masons to make daily progress in the acquisition of Masonic knowledge. Speculation and discussion within the Landmarks of the Order are to be commended.
4. Within Regular Freemasonry, interpretive discussion and exposition concern only the progressive acquisition of Masonic knowledge towards an understanding of the secrets and mysteries of the Craft, promoting the brotherhood of man under the fatherhood of God. To avoid any misapprehension, such regular discussion and exposition shall be described as "speculative" and the term "esoteric" shall not be applied.
5. Regular Freemasonry does not permit within it any form of esotericism which encompasses or tends towards – occultism, sorcery, alchemy, astrology, profane mysticism, transcendentalism, supernaturalism, druidism, rosicrucianism, satanism or any concept or movement related to any of these. The presentation, endorsement and/or promotion of such subjects in any Lodge holding under the UGL of NSW and ACT whether the Lodge be open, adjourned, at refreshment or closed or at any connected or associated Lodge function should be deemed irregular and is strictly forbidden.
6. Any breach of this Edict constitutes serious unmasonic conduct and shall be treated accordingly.
7. The Grand Master from time to time may grant dispensations to permit the presentation of papers on esotericism which would otherwise constitute a breach of this edict. A dispensation may be granted on such terms and conditions as the Grand Master may impose. An application for a dispensation must be made to the Grand Master in writing through the Grand Secretary. Normally it will only be granted if the proposed paper is a genuine and proper piece of masonic research.