hmmmmmm never considered the current plot could be so easily related to the pandemic.
Indeed. That's the exact reason all these "controversies" have been popping up over the last decade. If your goal is to find a connection, it's very easy to invent one just by using the right words. Our brains are designed to look for patterns, after all.
It does seem like the OP is attempting to spark something by bringing up politics apropos of nothing. It's rather strange.
On the main topic, diseases are one of those "immersive" elements that
sounds nice, but doesn't add much in practice. In a game like Skyrim, they are so insignificant you won't know you have one until you scroll through the status screen. More potent diseases, like in Pathfinder, can be annoying early on (ah, ghoul fever when you're too low-level to have restoration spells), but quickly become just another debuff to remove. They don't add any interesting gameplay options or considerations. Try not to get hit, or you might become infected? You were trying not to get hit anyway.