The main points of the article are well-summarized at the end, TL;DR:
"It’s not illegal to film a murder.
It’s not illegal to possess a film of a murder.
But it’s still illegal to murder people.
And it’s illegal to initiate a murder for the purpose of filming it.
If you have taken part in a murder and have film of it, the film may be usable as proof against you.
I can’t see that Rick suggests anything different here – i.e., I see no suggestions that it should be OK to molest children for the purpose of filming it. That’s good."
"It’s not illegal to film a murder. It’s not illegal to possess a film of a murder. But it’s still illegal to murder people. And it’s illegal to initiate a murder for the purpose of filming it. If you have taken part in a murder and have film of it, the film may be usable as proof against you. I can’t see that Rick suggests anything different here – i.e., I see no suggestions that it should be OK to molest children for the purpose of filming it. That’s good."