Comment by badpenny

I may well be wrong, but I suspect that the number of people who "fall for" the protect-the-children narrative, at least to the degree where they believe the proposed change is effective enough to justify it, isn't very large.

I'd argue it works because it's a rhetorical tactic that's highly effective at suppressing dissent. Anybody sticking their head above the parapet is going to get painted as somebody who favours pornography over the safety of children, even though this legislation and opposition to it has very little to do with either.