If anything, at worst I’d call it maybe “amoral” rather than “immoral.” But I’m not sure it even rises to the “amoral” charge. I’d understand not wanting to enrich the coffers of someone whose acts one despises, but in this case, MZB is dead, and I’d imagine most people don’t really know her SO Lisa enough to care that she’s being enriched if indeed she is.
For myself, I don’t think I’d be able to separate the artist from the art if I weren’t already deeply attached to it. This would be true especially if some of the person’s works (in this case, fiction) carries uncomfortable overtones or reminders of the artist’s… well, I was gonna say “foibles” but that’s hardly what I’d call child abuse of this sort. Flaws? Nefarious behavior? Fill in the blanks so that it’s a range that suits “shoplifting” to “drunk-driving” to “assault” to “rape” to “murder.”
Since I’ve never read MZB–and although Mists of Avalon was on my “someday I should probably get to it” list–I probably won’t bother now.
OTOH, if it were some unmatched classic that I felt was important part of culture, I would give it a try. I’m an opera lover and the first time I listened to the beginning of Wagner’s Tristan und Isolde I adored it, despite my being Jewish and knowing his reputation. Hell, I’d be interested in seeing Hitler’s artwork, for that matter.
Same goes for work I already adore and now know some icky things about the artists. I still love 30 Rock even though Alec Baldwin is bonkers, I enjoy Michael Richard’s work in Seinfeld even though ditto, and Gary Oldman in anything, also ditto. Bing Crosby and Frank Sinatra still give me chills with their incredible voices despite the numerous skeevy things in their pasts. And I will never ever stop listening to Michael Jackson.
So I guess it’s a case-by-case basis with me.
(On a lighter note… as painful as reading those transcripts was, I did get a giggle out of the mistake in the line, “I didn’t know her from Adam or Fox.” Guess the transcriber never heard the expression, “I don’t know her/him from Adam’s off ox,” meaning the hypothetical ox on the opposite side of hypothetical farmer Adam–his right side, in other words. It’s not a hugely common phrase, although it used to be more known, especially from someone growing up when MZB did. For example, it’s used in It’s a Wonderful Life by Sheldon Leonard’s Nick the Bartender during the Alt/Evil Bedford Falls sequence.)