Just adding my recent experience. I stopped watching porn about 4 weeks ago. I still masturbate regularly—generally once a day—but it is all to a mental picture/scenario.
I have found major improvements. I now get much harder when I do masturbate and I virtually always stay hard and cum. I used to have to do 2 or 3 rounds of masturbation to reach release.
I got a hand job a few days ago and got hard very quickly and stayed hard for a long time before eventually cumming. This is the second positive sexual encounter with a woman since paused my porn habit. (2 out of 2).
I’ve also been re-programming my brain as to what kind of scenarios/sex works for me, and I begun masturbating with my other hand to get exposure to positive encounters from a variety of stimulation.
Just wanting to give others another data point that cutting porn can really work.