The comparison to Albuquerque makes no sense to me. We could as well guess that Airbnb is less safe than riding a roller coaster at Disneyland -- so what? Those kinds of random comparisons prove nothing.
Because of its inherent structure, we can reasonably suspect that Airbnb is far, far riskier than current measurements yet show. I think of lots of nasty crimes that it facilitates and I'm sure you can as well. There is next to nothing in it that would prevent much higher rates of crime. It's structure is attractive to crime. The toll of the kinds of crime it is well suited for is incredibly high. Unless the basic model is significantly changed, none of those risks will go away or much diminish. Meanwhile the attractive potential for abuse of Airbnb is now well advertised to all potential criminals.
I suppose what most greatly offends and alarms me about Airbnb is how sharply it diverges from very well established cultural and legal norms. It is as if the designers of this product want glibly to overturn common sense about how far to trust strangers and it wants to ignore the many rules and regulations that are designed to prevent precisely this kind of business activity -- all on the basis that "most people are basically good" or something. That's socially irresponsible engineering.