Its true that a reason why non-Jewish people might be drawn to the website might be due to side effects related to excessive internet use. and for many people who have no halachic restraint, probably wouldn't bother unless it was directly negatively impacting their lives.
However, there is still much to learn from the resources of the site, in my humble opinion.
The emphasis on porn effects on the brain, in particular is why i think the website is particularly informative. The effects on the brain are still substantial even if you don't have ED related health issues.
If you you only skimmed the website, but didn't take the time to look at the lecture series, then you pretty much wasted your time.
Additionally there are plenty of posts on that website as well that discuss strategies on how to avoid stumbling altogether. Albeit, they recommend a "90 day recovery program" but in reality they are proposing ways to accomplish a lifestyle change, which is totally in line with what we are accomplishing here.
I found the information on the website to be informative, eye opening, and very easy to understand.