No not really. Like you can't choose to get COVID-19 or not. The only control you really have is the agency to get a vaccine or not, which is why it's so emotionally charged - it's the one thing people believe they can "control". So psychologically you grasp that because you're terrified of something you can't control (the pandemic).

Comorbidities increase your risk or "serious COVID", just like being unvaccinated does. But that still doesn't satisfy anything. Comorbidities increase your risk, getting vaccinated decreases your risk substantially, so if you want to blame this "well only fat people get it", well sure. Most people are fat, therefore they should get the vaccine since you can do that in a very short period of time whereas weight loss takes a while and you may have other comorbidities that you can't actually control or change at all.