I think it's possible to recognise that valid concerns are hijacked for other purposes without needing to take a stance against the concerns themselves though.

IE I think child porn is a bad thing and we should work as a society to address it in a multi-faceted way. I also think that using that as a way to gain legal capabilities to infringe on people's rights in a way that is not actually related to the prevention of child porn is also a bad thing. Those aren't mutually exclusive ideas. Though I did see the claim that he was 16 at the time he wrote it, so it's possible he worked that out later?