> If people who view such material are in the wrong because they support the harm it causes, then are not people who support Tor in general also guilty of the same?

How is this any different than FedEx or USPS? They don't read your mail to see what it is. To a near certainty at least some of what they deliver contains child pornography.

And what about roads? I bet child pornographers sometimes use roads for child pornography related purposes. Does that mean we're all complicit as taxpayers? Or maybe it's that the child pornographers are the guilty parties and common carriers are not the police.