Empiricism is a philosophy predicated on the view that knowledge cannot come to us unless it does so through one of the five physical senses.  If you know any fact, it is because you detected with nothing more than one or more of the 5 physical senses.

The reason this philosophy is likely true or else the best one within the competing marketplace of ideas is that those who attack it, cannot do so unless data comes to them via one of their 5 physical senses, and they send out data intending to stimulate one of the 5 physical senses.

If you are using empirical data to disprove empiricism, that is sort of like biting the hand that feeds you, isn’t it?