Perhaps in legitimate cases of clinically provable sexual addiction, some or all of those consequences might manifest themselves. However, to make this sound commonplace and something that is cured by taking some herbal pills is simply a means of trying to scare people into buying those pills, which draws also on negative social stereotyping of masturbation (going blind; unspeakable; hairy palms; et al). Whether or not they have a tiny disclaimer to say masturbation is healthy, they have already unleashed people's negative associations on the matter by that point.
It's worth noting that the site is registered to a company in Alhambra CA that also sells breast augmentation devices and foreskin stretching devices ... by using scare-tactics on their websites, again dressed up with extreme medical examples presented as everyday consequences, as well as making sure to arouse people's existing worries before posting a minimalist disclaimer.