I don't think you have the right to dictate to him what he looks at.
Nor do I Puking but she does have the right to say that she doesn't want to be in a relationship with someone who looks at porn. Which is what she is saying.
Fairnuff, no I wasn't. I just find it hard to believe that he would let it destroy our family, or that he thinks I am by being unreasonable.
He may well choose porn over his relationship with you hectic but right now I think he doesn't believe you really will end it. Do you think he is taking you seriously?
He is trying to deflect away from really talking about the problem and how it will affect his relationship if he continues, by asking you to go and ask others what they think.
It doesn't matter what anyone else thinks. It doesn't matter if he thinks you are being unreasonable. You are entitled to state your boundaries and stick to them. You are entitled to have your own views and opinions and have them respected by others.
If he thinks that is unreasonable, he is, of course, entitled to think that. But he should also understand that he has a clear choice - a relationship with you, without porn. Or a relationship with porn, without you.
That is his choice to make, not yours. You have already stated your intentions, now he has to decide on his.
I expect he will try to ignore you or hope that you will just stfu about this.