This would be a step in the right direction, Thomas. However, I still place the responsibility for change on the abuser. Is a blind person more abusive to someone simply because they can't see them?
To be honest, I don't know that many blind people, so I don't know. I would imagine not, though. However, a blind person can't see anyone, so they would be expected to treat people online in the same way they treat people in real life - hopefully civilly. For a seeing person, there is a difference between perception of real life people and perception of online people, and that causes a difference in behaviour. It's not acceptable, of course, but it is understandable.