In fact I think all now-dead authors should have their work as-is protected to a fair degree.
Dollars to donuts that the anecdotes revealed something either embarrassing or personally connected to the family members, it's just easier to posthumously blame the drinker.
I absolutely agree that shining light onto the subject of alcoholism is nothing but good for those seeking to avoid the horrible problem.
Why? Because of possession? That's a crummy reason.
Art is supposed to be upheld as on par with 'divine creation' by those that respect it. Literature, being art, isn't different.
in other words, we knew the Ecce Homo restoration was botched because we were able to compare it to the original piece.. sadly we won't ever have the luxury of knowing what kind of hatchet was taken to the memoir after the author's death.