A multiple dwelling "is a dwelling which is either rented, leased, let or hired out, to be occupied, or is occupied as the residence or home of three or more families independently of each other."
A Class A is a multiple dwellings "which is occupied, as a rule, for permanent residence purposes. This class shall include tenements, flat houses, maisonette apartments, apartment houses ..."
A Class B is a multiple dwelling "occupied, as a rule transiently, as the more or less temporary abode of individuals or families who are lodged with or without meals".
There are reasons, good and bad, that states and municipalities have regulations about zoning for commercial, residential, mixed, and other use. There can be a discussion about how well they're applied, misapplied or whatever.
Here's my opinion: I think you, and other transient-rental aficionados, have the burden of showing sufficient reason for allowing you and AirBnB to avoid civil and possibly criminal (depending on circumstances) sanction for breaking the laws. You also have the burden of showing why the rules should be changed to permit your activities subsequently.
I've never used Airbnb, but unless there are serious harms to people, where is the harm and why should the law be followed?
The neighbors onto whom AirBNB providers offload their externalities.
This is why my land owning neighbors love me and are happy with the direction the neighborhood is changing into.
Yes, there are bad guests occasionally. But there are also bad tenants occasionally—and the former is a hell of a lot easier to deal with quickly.