To be fair to the article - I don't think it claims post-SSRI dysfunction happens to everyone. The sexual side effects during use are well known and do happen to the vast majority of people; I think 100% is an overestimate but 80%+ isn't. Post-discontinuation, the article argues, is more common than reported, but it's not everyone. I agree that's likely - but I still think it's a small proportion of people.