I don't think it's a good idea to dismiss anyone's contribution to any work of art including collecting based on their character flaws or behavioral mannerisms. This is a kind of censorship and criticism that doesn't serve anyone.

I would propose that most of the elegant artists, performers, composers, painters, authors, collectors et. al. are people that many of us would find ideologically or socially intolerable and that goes for many of the contemporary folk idols extant.

Give Sharp his due. No one else did what he did at the time he lived and I am a grateful recipient of his work.

Many of the musicians that I admire for their efforts are not what I would call "good people".
But to evaluate their contributions on the basis of their idiosyncrasies is fallacious.

Being part of the human family I reserve the right to say that I've done some pretty stupid and ugly things in my life that were not premeditated but out of ignorance.

Let's be charitable to Sharp and pat him on the back for his contributions.