@2389Champ,
Obesity is a factor but it isn't THE factor that you are implying (incidentally, being underweight seemed equally problematic).
The country survey is a bit dubious, as there are so many confounding factors. The actual paper you linked to seemed to show the risk of death, even for the very obese, never reached twice the risk of death in those of healthy weight.
So, yes, lose weight and be healthy, but simply losing weight isn't the miracle strategy against COVID.