This is an interesting article. It makes no mention of the controversy leading up to these comments. People generally aren't racist when it comes to money. The host was triggered into a racist tirade after being informed the renter was bringing 2 extra people and 2 extra dogs. The guest informed her hosts while on route in a snowstorm. It's well within the hosts rights to declare the contractual reservation null and…
Deciding to bring friends and pets to a weekend stay is normal human behaviour, and if this was an entire cabin, as described, the maximum allowed guests was quite likely more than one. There's also nothing to say that pets weren't allowed on the property.
And I don't get out that much, but being snowed in with two friends and their dogs doesn't sound like a "giant weekend party". Were they big dogs :-P ?