This is an article about the online communities of people who abstain from masturbation. It discusses the reasons people join these communities and the potential harms and benefits. Some people find these communities helpful in overcoming pornography addiction. However, there is concern that these communities spread inaccurate information and may overlap with extremist groups.
Yes, because as the OP article makes clear the nofap movement is a right wing pipeline, so people embracing the one will eventually also embrace the other.
It looks like you picked one example from every link you posted that supported your view, while ignoring all of the other examples where Gen Z are leading or equal to Millenials in terms of progressiveness.