I wasn't going to "shame" or denounce the guy, if that's what you were fishing for. I'll leave moralistic judgements up to those directly impacted by his activities -- in this case, his landlord and his neighbors (and quite possible, depending on how he files his returns, the NYC taxpayer, as well).

But on broader fronts, the poster's confession does add to the body of anecdotal evidence we have (being as hard data would be extremely difficult to come by) that a significant chunk of Aribnb's business model is based on outright fraud, in various forms. "Outsourced" fraud, one might, for which Airbnb can't be held directly or legally culpable -- but fraud, pure and simple, nonetheless. And even if only 5-10% (a very conservative guess) of Airbnb's host are engaged in a comparable sort of scheme -- we're still talking about a scale affecting quite literally millions of people, globally.

Which in turn the leadership of Airbnb must no doubt be cognizant of one some level; and -- until they're forced to do otherwise (because you we nearly always have to force these companies to behave properly, it turns out) -- more than happy to turn a blind eye at.

"Socializing costs, privatizing gains", in other words.