Couchers founder and wrote the article.

I don't think so: it just takes thoughtful moderation, setting clear rules, and then enforcing them. When you make it socially unacceptable on the platform, people do a good job reporting inappropriate behavior.

I think the reason that CouchSurfing.com turned into a low-key hookup app is that it was actually a profitable strat for them. They used to monetize verification (something like $60 per verification), and my hypothesis is that a large proportion of people who ever verified paid for verification soon after signing up. By being a hookup site, it actually increased the perceived value to a certain subset of people signing up, which increased signups, verification numbers, and revenue. Of course this made the experience worse on the platform itself once people tried to use it, but they could milk that "easy way to hook up" concept for a long time (basically until the pandemic killed it).