I don't even know if that was much of a "reversal".
Blue states were paternalistic over both your property (business and social gathering shutdowns) and your body (masking, social distancing enforcement), while red states (particularly Texas, Florida) were very laissez-faire for both.
What's perplexing about this is that research has generally correlated higher amygdala activity (fear/worry) with political conservatism, and lower amygdala activity with political progressivism, but in this case, the effect seemed almost inverted.
In that case, I imagine that the response of mask mandates wasn't out of fear but was done do to the obvious benefit in controlling a disaster. The anti-masking movement is also I suspect a fear response. People are afraid of change, especially extremely visible change
Fear of infectious diseases is inversely correlated with testosterone levels, and so is liberalism.