Do we know what will happen without porn? This isn't a silly question. The law of unintended consequences rules. So you have men who have no sexual release, the #metoo movement makes dating a bit dangerous, hypergamy and men dropping out make it difficult for men to find partners. The divorce laws make a permanent relationship a game of Russian roulette.
Young frustrated young men....not good. If I wanted to create an Islamic patriarchy, this would be the first thing I would do. Make angry frustrated young men then offer them a system that will give them women and the control over women.
These people don't realize the powder keg they are creating.