For me, it is not about the crime he committed as a child, (although, yes, I do think a person has the right to know if they are becoming personally involved with someone involved in a notorious murder case - particularly if a woman of child bearing age).
The general public don't have a right to know general info about him which prevents him 'getting on with life' quietly and responsibly.
Piper makes a good point above - why should JV not 'be at large' re images of child abuse when so many others are? I don't know, that's not logical of me, but I don't think he should.
Perhaps it is because his repeated breaking of his new identity - to me - illustrates his inability to 'cope' and I therefore think he is likely to re-offend until he 'goes back inside' - perhaps as a way of enabling that to occur.
how much of that breaking of identity is down to him and how much to the press (or even us, speculating on a website) I don't know.