The most upvoted and commented story about AirBnB is "Airbnb Nightmare: No End In Sight"[1]. Also in the top 10 are "The Moment Of Truth For Airbnb As Users Home Is Utterly Trashed"[2], "Airbnb Victim Speaks Again: Homeless, Scared And Angry"[3] and "Dear AirBNB, No thank you for the XXX Freak Fest"[4]. There are more in the top 20.
A single comment sounds like poor evidence to me.
[1] https://news.ycombinator.com/item?id=2820615
[2] https://news.ycombinator.com/item?id=2813956
[3] https://news.ycombinator.com/item?id=2820605
[4] https://news.ycombinator.com/item?id=7407796