https://news.ycombinator.com/item?id=9633122
... and it doesn't really represent the operation. At the end of the day, moderation and support for membership is needed, particularly for keeping predators out of the system, mechanisms for people who might have fallen prey to them. It is something that requires time and effort. Such operations need guaranteed vigilance on these issues, and aren't easily sustained by the whims of volunteer involvement.
It might be that many established members are okay with taking risks. I remember one host I stayed with that talked about hitch-hiking on trucks around Europe to save money, but also how she got drugged once and her money stolen and dumped in the middle of an autobahn, and then another time how she 'talked herself out of' being raped. This sort of risk might be okay for the seasoned couchsurfer, but this might not sit well for newcomers who don't know who they are staying with.
Not sure if the situation has changed with CS, and they've become profit-oriented, but it does take some money, from somewhere, to keep things to modern standards. Personally, I would prefer that CS was sustained by those who can afford to by donations, rather than subscription. And I may actually look to bewelcome, or hospitality club if that's still around. (I also used another called 'Trustroots', not sure if that still has a community.)
Edit: To that individual with the privilege to down-vote, could you please correct me where I'm wrong with an actual comment?