The researchers also asked the participants to rate how often they noticed ten different problems in the online forums. Visitors to NoFap forums reported seeing content that was often trolling (88%), misogynistic (73.7%), bullying (49.1%), anti-LGBT (42.9%), or anti-Semitic (32.0%). Additionally, a significant number of participants reported being told to harm or kill themselves (23.5%), witnessing threats to hurt others (21.1%), and witnessing doxing of others (17.1%) on the forums.
I mean, of course? People who are depressed, anxious, or suicidal are more likely to get sucked into pseudoscientific cure-all cults than people who are healthy and without major problems in life. Telling someone "you'll stop being so depressed/anxious/suicidal if you just stop jacking off" isn't that compelling if they're not depressed/anxious/suicidal.