willful misconduct would include such things as:

1 causing /colluding with groups responsible for actually causing the disease in the first place

2 knowing full well that the vaccine actually helps promote the delta variant (or other strains)

3 promoting use of "boosters" every 3 months to reap in profits, and also possibly knowing of simple cheap cures, and colluding to spread disinformation about other cheap cures

If any 2 of these are provable (in a court) I would say they would certainly lose any immunity