There may be those that pose no harm as yet, but I do not believe that there are those out there that pose no harm.  Those who have not harmed just have circumstances that insist upon them more control, and those, under different circumstances (ie no consequences) would indeed pose the same threat of harm.  The sexual attraction to children poses a danger to those children, full stop.  And this from someone who started out three decades ago in practice with serious offenders, advocating for rehabilitation.  I’ve now moved on to where I realised just how very naive that ideal was, and is.