GrandThingsI think there are probably a million reasons to say Fuck Vail, but this isnt one of them. If they allowed employees to stay or continued business as usual they could (would) be putting hundreds of lives at risk due to the potential spread.
Additionally, from the articles I've read and assuming the context of @B.Gillis above comment, it seems like anyone who needs special accommodations or to extend their stay is being allowed to. Overall I think this is just a shit situation, but Vail made the right call for the general well being of their community.
Idk, I think the biggest thing was whether people were being allowed to stay. And it sounds like they are to some extent. It's not like a lot of these people lived down the road from these towns and opted to stay in employee housing. A fuck ton of them are from the east coast, the midwest, etc. These places don't seem like the best place to be stuck in this time, but having that many people shuffle through airports or make the huge road trip back to the Northeast doesn't seem like the safest measure either.
I don't think there is a perfect solution here but it's not as if people were teleporting back to their families. Even then, all the cross country travel has just helped to spread the virus more, and put the people traveling, and the people they came into contact with along the way at higher risk.
In a situation like this, if you've lived somewhere even for 3 months, you're local enough to stay. The bigger issue are the people traveling back and forth between the cities and the mountain towns.