Wow, I hate this attitude (from the blogger and others). People are innocent until proven guilty and I don't think their names should be dragged through the mud. If they are proven guilty later, fine. I have no problems with people talking in generalities about issues such as the risk of paedophilia and the need for child safe guarding, but there is no need to bring named individuals into it. I have seen this happen before (outside naturism), where people around me have been accused and later no action has been taken against them by the police/prosecution, but people just assumed guilt. Often using similar justifications like "I always thought there was something strange about ...".
All of that said, I do have an opinion about this: Naturists have to realise that they must hold themselves up to a high standard of child protection, particularly because of how the public will view them, not so much because there is an increased risk. In the UK, many clubs have taken a very strong stance on child safeguarding (partly because there are legal obligations to do this and partly because British Naturism has been promoting it).
The best way to combat child abuse is openness. It can only occur because law-abiding, moral people are not aware that it is happening. This means, people need to have open and honest communication with their children, communities need to be open about accusations of abuse etc. (but not to the point of a witch hunt, that's why this ARGH PAEDOS!!! culture is unhelpful), locations/situations that might enable abuse should be eliminated where that is a proportionate measure (try to ensure some parents are present, avoid 1 on 1 time, children should stay in public spaces), avoid concentrations of responsibility/power (if a few adults can control the access that children have to other adults or the management is an "old boys club", this is a problem).
I don't think that child abuse will ever be eliminated from society, but I think that we can make the situation a lot better. Some child abuse can be entirely prevented. For the remainder that may occur, we should try to reduce the stigma on the victims, so that they can come forward and stop it, but also so that they can move on with their lives without feeling shame.
Finally, I think it is worth saying, that most of us, including myself, would not necessarily recognise signs of child abuse or behaviours of an abuser. This is an area, that we could probably all benefit from knowing more about. It can be hard to see things that are right in front of you. "Never attribute to malice that which is adequately explained by stupidity."