first off, it should be noted that rabbi green has retracted the "pro-pharmacological" stance he proffered as "Alter Itzik."  his more updated approach can be found in his book EHYEH.

i think it's awfully strong to label what rabbi green and dr. matt do a "distortion."  their scholarship is consistently top-notch, and they do a great service providing access to difficult texts for Jews without huge learning backgrounds.  additionally, you make the implicit claim that since they came up in a time period when Jewish spirituality was influenced by the western import of eastern thought, it makes their theologies less worthwhile, less Jewish even.  what must be noted is that Kabbalah itself is a prime example of a form of Jewish spirituality that was heavily influenced by surrounding religions.  a good iteration of this phenomenon is Chovvot HaLevavot, a work many have called "Jewish Sufism."  Another good (scholarly) example is Rabbi Dr. Green's work on the matrona and the Shekhinah.

Lastly, Gershom Scholem's position on a "Gnostic" Jewish mysticism as found in Merkabah texts is woefully outdated.