Many "fans" want to believe much of the above, simply because it is much more palatable than the TRUTH; such is also the nature of MYTH (an alternate version that sits & sounds better than "reality").
It certainly doesn't help matters any when even some of those that were there parrot the same ..... for reasons of their own naivete, dishonesty, desire to preserve only the positive side of Elvis (at the expense of the TRUTH), or out of self-promotion motives.
Hodge & Geller are unreliable as "sources." There are many examples on a number of levels.
Westmoreland, believes what she believes, ..... but is incorrect.
If the above MYTH were indeed true, ..... the Estate of Elvis Presley would be the first to embrace & propagate it at every opportunity they could, because it is indeed much more preferable than the TRUTH.
On August 16, 1977, .......... polypharmacy was the culprit first & foremost (CNS depression that ultimately caused his heart & lungs to fail). It wasn't the first time that it had happened, either (with some of the exact same medications). Sadly, it was a double tragedy because on top of losing Elvis (due to his addiction), ..... it was also a bonafide malpractice case (ie: preventable).