Not exactly -- I'm showing that that form of argument is weak at the margins. I leave open as to whether Townshend's actions are at the margins.
I did note, in a recent post, that the UK law involved was passed in 1978. That's long before the internet, which, as I've pointed out, really is a changed circumstance. But no politician is going to base his campaign on REPEALING child porn laws, is he, so the statute stays as writtern while the world changes around it. So you can expect some pretty bizarre outcomes, as I think this one is an example.