Your comment does read like 'My grandma has smoked 20 a day all her life and she's still alive at 90'. statistics do not preclude people from being luckier or unluckier than the average.
If the sequence is: 1- study that shows correlation between X and Y 2- someone says "X causes Y" referencing the study
then it is appropriate to point out that correlation does not imply causation. X may cause Y but you can't claim it based on the correlation study only. The burden of proof is on you. Nobody needs to disprove causation here.