Gonna be sorta active on here for today, anyways. Facts time and slight conspiracy on the side.
I believe most weaknesses of the supernatural, are nothing but a psyop to get people combat corruption (diseases)
Vampire weaknesses or most weaknesses of some supernatural beings. But using vampires as a brief example with silver and garlic, silver although werewolves weakness as well. Silver is an antibacterial metal, while garlic has plenty of health benefits. But the main thing however i wish to focus on, is fire. Because in old folklore, was that vampires are made from unfortunate deaths; but the main one is diseases. Death by an infection or disease, you're a vampire. So people will burn your body or dig it up and burn it. Which burning bodies have reduced spread of infection, as in the case of the black death.
Before anyone ever says the idea is a bit of a reach, and that "not everyone was an idiot, to believe in such things". Many people in the US believed injecting disinfectant to be the cure for the damn virus in 2020. All because of our damn president, whom we voted out of office. But his as$ is back. But before anyone else points fingers, many idiots also believed 5G towers were the cause of the virus and others thought the vaccine was an attempt to put tracking devices in us.
People are willing to believe in anything, anything that makes sense weird perception of reality they have. And many would definitely abuse that, for the better or the worst