I've said it before and I think it bears repeating:
Catching a disease, whether covid or AIDS or leprosy or Ebola or a simple common cold or whatever, is NOT a moral failing.
Knowingly spreading it IS, though.
Since many diseases spread while a person is not showing symptoms - and covid is especially nasty with asymptomatic carriers - it can cause a moral dissonance. Few people want to consider themselves as morally damaged. Far more comforting to not test, and never know. After all, if someone else's infection cannot be traced back to you then their consequences are not your fault, right?
However, no, because by choosing to live in ignorance you are choosing to spread the disease.
(This is why I choose to wear a respirator and make other adjustments to my life to minimise the risk of my spreading disease, knowingly or unknowingly. This is difficult and costly, but I know that by doing what I can I am minimising the risk to myself and others by some tiny amount. If 8 billion people did the same according to their means a lot of diseases would vanish within a year as the risk is driven down and down and down.)
Yet some people aren't ignorant by choice. They outsource trust and expertise to governments and health care workers and scientists that the media throws into their daily lives.
The people in those institutions who choose to keep people ignorant are actually evil: they are actively aiding and abetting the spread of disease.