It’s my opinion that it’s a question of personal ethics that will decide how far a reader will go to show either support of good work or distaste for a authors personal behavior.

As a side note, in many instances it is the author’s lifestyle that makes the work what it is.
We know authors like Hemingway are honored for writing that was greatly influenced by his life style. So too Wilde’s. But their lifestyles are not on the same level as the abuses of Hughes.

These kinds of issues are what sparks great debates in the literary field. And in the end, regardless of points made or issues picked apart and analyzed to the molecular level, it will still be the readers sense of ethics that will determine if the author will be honored for exceptional work or condemned for unacceptable ethical and/or social behavior.