You're absolutely right, Hermes. There's not even close to enough information to warrant the click-bate statement in the title. The correlation-does-not-equal-causation fad that's swept like a plague across the soft sciences these past several years, please keep in mind, cuts both ways, and the epistemological criteria for causation has certainly been met with "social contagion," so-called. I know for a fact. I've lived it. The studies which purport to debunk it are every bit as flawed.