From what I have gathered about other "historical" figures, I guess I don't see Hubbard as being particularly better or worse than others in character. Unsavoriness seems widespread.
Is Bill Gates a nice moral guy who developed his software for altruistic reasons? I doubt it. And it was never that good a product, yet he has had a virtual monopoly that has made him many many millions.
Maybe I am biased by my background in psychiatry, but I am skeptical and leery of those who decry the morals of others. At best, SNL's "Church Lady" comes to mind; at worst, there have a been a lot of witchhunts started by those who claimed some kind of moral high ground over others.
I'm not much of a fan of those who fly the flag of "I'm OK, you're(he,she,they) not OK."