> "If I focused on my health, ate clean and exercised daily, why should I also be subsidizing Billy "video-games-are-my-exercise" fatass's chronic health conditions?"

Then why are you not asking your insurer why they cover a lot less preventative health or other options. For example, Kaiser flat out refuses to prescribe GLP-1s for weight loss, others insurers are the same with gym subsidies or not covering nutritionists.

But they'll happily pay for your gastric bypass.