Well yes, as it stands this is currently only showing correlation and not causation, but that doesn’t mean there ISN’T causation. Amount of rainfall correlates with umbrella usage, because amount of rainfall causes umbrella usage. You can’t claim a causational relationship until causation is specifically proven, but until then it’s reasonable to tentatively infer causation if the correlation fits with other evidence. In this case, mushroom use and not wasting your life on the grind fit the evidence enough to tentatively infer causation.