No particularly good reason, except a bit of schadenfreude perhaps. I guess if I were balancing the pleasure of a scarlet letter stitched into the public profile of racists and bigots, vs that of just kicking them off the platform? Hmm. Tough call for me personally. But it's not up to me, so I can't really say I have a good reason for NOT kicking them off the platform, except maybe a family member or friend finds out about their twisted badge of (dis)honor.

Maybe it's a bad idea and it just encourages a sort of tribalism where the bigots do business with each other and as a social we really should say, no you can't use public goods like AirBnB. Yes it's a private company, however it is also acting like a bridge to what has historically been a place of public accommodation: hotels.