Thomas,
Don't know "Death Heather" but, given his ambition and associative style, it should come as zero surprise that Cohen will produce an ocassional airball. Aim high and you can fall shorter. As a general rule (for me), the more explicit his poetry, the more likely it misfires. You may have just found one miss. Congratulations. There are more. There's also, say..., "Hallelujah", an absolutely exquisite piece of poetry, which seems to have resonated very deeply with the many, many artists who've covered it to tremendous effect. There are more of those, too.
As to the "psychic terrorism" of Jesus, etc - his meaning is pretty clear (even though his choice of words is designed to provoke a reaction).
Finally, the "I'm not sure what it means now". This is a fairly common notion, not only among poets, but also among really ambitous writers of prose. Thomas Pynchon (considered by many to be the finest living American novelist) once acknowledged that there are parts of "Gravity's Rainbow" (considered by many to be his finest novel) that he can't decipher today. Associative writing, by it's nature, is the product of the moment and sometimes the entire point is that the resonance of an association resists rational explanation. That part is called "poetry".
Marty
Bottom line:
I never said Cohen was perfect.
You've said (repeatedly) that he's a poseur and a fake.
I look at the ARMY of highly regarded artists (and a fair number of writers and critics) on my side of the fence and feel pretty comfortable that the best examples of Cohen's poetry have passed the highest level of scrutiny (save your own).
That said, you are certainly entitled to your opinion.