In thinking about "obesity" you have to account for where that weight comes from. Many professional athletes' BMIs classify them as overweight or obese. Lebron is "overweight" according to BMI.
The conventional thinking is a person with the corresponding health problems that come along with obesity due to excess body fat (high cholesterol, breathing problems, high blood pressure, etc.) make them more susceptible to Covid.
It's not clear whether an "obese" offensive lineman is more susceptible to Covid, whose weight is partially due to muscle and who trains regularly and is in better cardiovascular health than the stereotypical "obese" person.
Point: These kinds of articles require a lot of nuanced consideration that they don't contain. The overall health of a 350-lb offensive lineman /= a non-athlete 350-lb person.