This assumes that COVID-19 deaths are equally distributed across the entire population, regardless of obesity. Without evidence, it is not accurate to assume this equal distribution.
Nor is there evidence for the claim that the so-called "obese" (as measured by the flawed and worthless BMI standard https://www.npr.org/templates/story/story.php?storyId=106268...) are dying disproportionately. Calling it the fault of the "obese" is just another way of deflecting blame from the criminally selfish and incompetent behavior of the previous administration and leaders in states like Idaho, Texas, Tennessee, and Florida.
That's very subjective and anecdotal, and no doubt reflects a huge selection bias. Why not compare with Kuwait, which has a similar rate of so-called "obesity", but has a lower rate of COVID-19 than many US states?