Very weird & very sad.
I have stopped trying to understand it, I simply keep my and my family's protections up as well as is possible. Masking in all crowded situations, masking in all work meetings and when I do my lectures, HEPA filters at home.
I hope that with time, people will develop the strength to acknowledge the facts. My wearing a mask is also a quiet signal that there is an alternative to denial.
One encouraging thing: the people around me accept my masking.