Consider the artist not the art?

Poetry professor still teaches her class despite knowing some of her artists are actually bad people.  From the comments:

There is a palpable presumption of her own moral rectitude on the part of the author, as is most commonly the case with those who wish to be moral gatekeepers and tastemakers. Frankly, I think her life needs to be investigated and judged more thoroughly before she has credibility as an author.  It is an inevitability that there are many sinners in the crowd that seeks to crucify others for their sins. Doubtless this author would consent to a critical analysis of her life, from often inherently hostile perspectives, in the judgement of her work.  Right?