According to a recent Centers for Disease Control and Prevention health alert, “this conversion process, used to produce some marketed products, may create harmful byproducts that presently are not well-characterized.” These additional chemicals may be responsible for the increasing reports of toxicity among recreational users of products labeled as “delta-8 THC.” In addition, the CDC speculated that the use of the words “diet” or “light” on the label might have misled buyers into thinking they were buying CBD, not realizing they were buying a product that has psychoactive effects.
Serious toxicity from cannabis in experienced recreational users is uncommon, but the labeling of THC-8 products may confuse some buyers.
It is true that being obese is a risk factor for severe COVID-19, but it is a modest risk factor at best for people who are overweight.
I would also say that the original statement seems to blame the victims of this terrible pandemic, and possibly to falsely reassure people of normal weight that they have little to fear from COVID-19.