Unfortunately you may have to set a boundary. You may have to say "I'd like to take a break from sex and address these issues". You can tell him that you think the amount of porn is unhealthy and that it's hurting your relationship.
Let me just say, if he was viewing a little porn on the side here and there it would be no big deal. But he obviously has a problem.
So you have to set some sort of boundary, and the only thing you can control is your participation in sex. I'm not saying withhold sex until he's "cured", but it is perfectly reasonable to tell him you want to take a break until there's a plan to address the issue. Fair warning, when you set this boundary he will likely get angry. You'll have to stand your ground even if he says hurtful things. He may try to shame you or be angry so that you'll go back to the usual sex patterns. This is common with addicts.
And just so you know, he'll likely need professional help for fixing how his emotional and sexual wires have been crossed up.
Best of luck to you