The truth is hyperbolic, one-sided and closed minded.
And I can can go even further with this "thesis paper" so stay toned.
Scientifics do claim some cold, hard, close-minded truths, but they tend to be very small scope and worded with great care and without ambiguity.
For instance, "porn is good/bad" is a subjective judgement that has very broad scope.
Whereas "porn and masturbation have adverse effects on psychological and physical health" has a smaller scope and easier to support or debunk: The topic of neurological drawback of porn has already been discussed, but for men you can mention that semen production is a resource consumming process that diverts nutrient, minerals, and vitamins away from things like growth or immune system (btw in animal kingdom mothers produce less antibodies because milk production takes resources). Such wording has also the great benefit of not needing to adress 'positive' effects or function of porn if there are any.
Spreading awareness about demerits of porn is a good thing, and suggesting tools like easypeasy is commendable, but that's the limit of the scope you can tackle with just the subject of "porn's adverse effects".
If you carelessly tread on broader subject like "everyone should inconditionnally stop porn", you'll need to address a lot more subjects like addiction in general. One thing of note, is that even knowing drug's adverse effects, society still gladly engage in them. So actually, "you should stop porn because it's bad" isn't even relevant. Pleasure seeking behavior and outlets fulfill psychological 'functions', so their unhealthiness is irrelevant when it comes to the individual's decision making.
On another note, while there are small pieces of universal truth, they aren't enough to navigate the world. If that was the case, then instincts would be the only thing we'd need, since instincts are sets of hyperbolic, one-sided, close minded rules that triggers with our pattern recognition. But the human species gained rationality through natural selection. So, it's safe to assume that there is an evolutionary benefit to use rationality to study and adapt to situations with a higher level of granularity. In other words, don't be satisfied with just general universal close-minded rules, don't give up on using your head to take in more details to see the world with higher accuracy. Absolute confidence in your judgement means you are about to stop using your head.
btw, easypeasy claims a ridiculous success rate like >80% iirc, how much do you believe it? And how reliable do you think the author's testing protocol was? like is it scientific quality like blind test, and no cherry picking, or just ass pull?