I read articles about that in 3 languages now, with less details than the linked article. It makes headlines, but some facts are omitted. Reading the article linked here, I thought like @Louise0, that those bookings were announced catastrophes waiting to happen. Imagine such a mob partying at your place!
Like @Anonymous, I'd be inclined to accept everyone , I'd not use the expression "a good fit" ever, as I don't request that even. No likely damage and no personal danger, if I have to bully them into following house rules is enough. Those two minimum requests cannot be taken for granted here.
On a personal side, I had a seemingly normal local guest in May, even a superhost, who turned out very strange. It went from peculiar in the evening to rude in the morning and became a power struggle within a few minutes, if he can bully me in the worst way, which he could not get away with. When he left, I was shaking over hus macho attitude. I had not seen the review yet. It was a discriminatory tirade, aping my (Austrian) accent by a fake German one, mixing in words used to make fun of Germans undrr the occupation and bot used by any German for decades. The private part was even more horrible. It took quite a while, but airbnb took it down a few days ago and is still investigating, if they will close his account. I had not suggested that, as it being their affair not mine, but he had written a fabricated revenge review for another local of foreign origin a day after mine.
I get mostly nice reviews and grt along very well with guests. The occasionally crazy one makes me furious a few hours and tgen I forget them. Litterally forget tgem. I know, there were two crazy ones in the same week, but I can't even remember what the other one was about or if it was a male or female guest.
But this one racist review hurt terribly for all of the six or seven weeks it took airbnb to remove it. Even thinking of this guy makes me furious nearly 3 months later. And the other host had closed alldates immediately after the review ge got and I can't find his profile anymore. Looks like he takes a ling break.
Meeting racist hateful people is like veing exposed to poison. In that sense, airbnb took the right decision to protect their hosts.
From the articles, we do not know how many wrre banned and for what kind of talk. Some things are group phenomena and if a member of this group travelled alone or with wife and kids to enjoy a beach holiday, nothing might happen. If however someone is not a mere follower, but a proponent of racist thinking, it's irrelevant, where he goes. I can't imagine, that my own guest could ever have any decent conversation with a foreigner, especially a foreign women. Nobody not born here could enjoy meeting him, let alone hosting him. Eitherban them or come up with an algorithm to pair white supremacists only with other white supremacists. But where would that lead? Discovering all our thoughts to make good matches?