AirBnB is a world wide site.
Protected classes are I belive a US legal term, well there may be similar phrases in other countries legislation but I would guess this is one of those first world issues. I doubt if anybody on here who lives outside the US would know what a protected class was.
Discrimination obviously occurs well beyond those aspects covered by US law or any other countries laws.
AirBnB state in their policy some examples but also do mention that they look to go beyond just those limited examples.
I certainly was using the term in its normal dictionary definition with a slight reference to the stated AirBnB policy.
I use IB, well I have a 3 day requirement, and it suits me in my situation. I can think of different circumstances where I would not want to, I can think of other hosts and situations where it would not be appropriate.
My issue is I that I would expect AirBnB to lead, they are the ones who have made this such an issue, they should be at the forefront, leading by example.
David