Attitude to convicts (1891)

Why is it that we are now proud to claim convict ancestors? I was looking in historic newspapers for evidence of earlier views about convict heritage. I found the following remarkable piece in The Queenslander of 7 March 1891:

Whatever changes may be introduced by the advance of Social Democracy, it is doubtful whether pride of birth will ever be eliminated from human nature. There is no sign of it disappearing now at any rate. In Republican France it is just as strong as it was before the Revolution. In America, where there is no titled aristocracy, people are as proud of being descended from somebody who came over in the Mayflower as the Beauforts are of having come over, in the person of an ancestor, with William the Conqueror. In Australia folks have not yet begun to boast of the fact that their forebears came over with the Sirius, or in one of the transports that accompanied that epoch-making vessel. But I have no doubt that will come in time. Most noble origins, from the founding of Rome to the Norman conquest, start from violence and crime, and in a couple of hundred years the convict taint will be blue blood.