BlueBrother well the capital sin in the Bible is to reject God. Jesus praised Jehovah for hiding the truth from the arrogant. If those fighting Covid 19 haven't accepted the truth, well, Jehovah hasn't led them to it. In a JW's mind their selflessness just attests to the beauty of Jehovah's qualities, that are reflected even in those who refuse to acknowledge his sovereignty. Besides they will add that "the door is not closed yet" and that they might even die and be resurrected as unrighteous.
I don't believe in any of it now :) I find it an interesting, elaborate construction. Back then it was enough for me to focus on all the good, nice, rational things in the "truth" and keep going. But the more I studied the more I discovered flaws, until it became unbearable and I left.