I will respond via the forum instead of to your email on the chance that others may wish to offer opinions. First, the easy point: of course we can't prove that Bix was innocent of the molestation charge. The awful possibility is out there, with no way of proving anything one way or another, that the worst is true. And I'm glad to hear you confirm you had no intention of implying that his actions as a high-schooler somehow "brought this on".
I also think it's true, even though you don't offer this argument, that what people say about others can be more of a reflection of themselves than an accurate description of their subject. So we have colleague after colleague stating that Bix was nice/gentle/kind or some variation (Challis, Dieterle, McPartland, Carmichael, Rinker). We have the unending loyalty of the Shaffner sisters, despite Ruth having been, in my view, dumped, to put it crudely. There are others with charitable recollections that I recall from the interviews done by the Miami University researcher (name??) They all may just be decent human beings who remember the good in Bix, and in truth he might not have been all that good. So, yes, he might have been a bastard. But why aren't there loads of people attesting to that? I mean, plenty of people trashed Hemingway after he was dead, and I don't recall anyone saying great things about Bird's character, genius though he was and he died almost as young as Bix. My point is, nothing is really provable about a person's character, and most people are mixtures of good and bad traits, with plenty of good and no doubt more than a few embarrassing and downright bad actions under their belts in this life. But why aren't there more people telling us what an SOB Bix was? I think we CAN infer that Bix was not an SOB simply because no one is telling us he was. He was just human, and based on the recollections in print and on tape, nicer or more polite than most. Big deal. Frankly, when you die at 28, you have less time to turn into an SOB.
As for my inferring that Bix was sensitive, you're completely correct, I have no proof. Just because he SEEMS to be showing us his emotions when he plays, he may not be. I agree that I am reading all of this into what I hear. And on the other side, when I hear somebody like Dizzy Gillespie, who to me seems completely intellectual, he may in fact be wearing his heart on his sleeve. However, the fact that Bix was an addict is major evidence that he was sensitive to me. I have no idea if this is a clinical fact. However, I know what I know, and addicts have a lot of exposed nerve endings. You are welcome to disagree.
BTW, I have read a lot of Cheever, never thought he was a nice guy based on the talent. Never heard of Carver. Better check him out. With music it seems less clear-cut because it is not literal. I also never thought Beethoven was a nice guy. Thought he was probably a very powerful individual, though. Now, Tschaikowsky, I thought, might be a nice guy. I'll have to try and find out. Ditto Mendelssohn.