[jacobgkau]

Person 2 has no duty to prove anything (or to enter the conversation at all), but Person 2 isn't going to convince anyone of their viewpoint by choosing not to attempt to prove their point. By choosing to say "not my problem," Person 2 is accepting liability for not attempting to change their opponent's minds if/when they get out-voted on the issue in the real world, as is currently happening.

[Eisenstein]

If people want to be swayed by emotional appeals with no evidence, I can't stop them. But I am not going to play that same game in response.

[kcplate]

What an interesting deflection. My initial comment mentioned the significant difference in access to porn between today and 40-50 years ago. You made a claim that it was meaningless. You brought the concept of its “effect” to the conversation.