Yeah. The DSM isn’t the final word here. Obviously any superstimulus will have extreme addictive potential. There’s no reason why pornography would be any different than, say, junk food in this regard.

Not only this, as much as I love him due to him being family, I don’t love his views.

First off, I want to tell you that this is OK, even if it’s hard. I know plenty of people who hold similar views to your dad. Some of them I love very much even though I strongly disagree with their politics.

I think it’s important to emphasize this. People on the internet can be quick to demonize others. But OP is 15. What good is there in trying to create a divide between a 15 year old and his grandpa? There is none, not in this situation, anyway.

Besides, if we’re being honest, most of our grandparents have questionable views. There’s a massive generational gap there, and a lot of social progress has occurred since our grandparents were young. And in old age, people often just don’t have the cognitive flexibility required to adapt to these changes. And there comes a point when it might not even be worth trying to change them because they might literally just not be capable.