That is terrible, I’m so sorry 😞
One of the reasons we chose the one we did as their policy is not to shut down (except temporarily when they have a case). One of the nurses told me that even if it makes them at higher risk to catch covid, they were not going to keep their loved ones away. Dementia is hard enough on them, let them enjoy their family while they can. My FiL only knows us about half the time now. It is such a terrible disease.
I’m glad your dad wasn’t alone at least. Still, that must have been so hard on you.
Sounds like a place that cares. I know many elderly in assisted living would have rather died that being confined and not see family