Good luck with that theory. HEK has been used to test common OTC meds like aspirin and ibuprofen.
HEK was used to test common OTC drugs for ridiculous reasons, but it has not been used in the creation of all drugs.
For example, older medications like aspirin and metoprolol do not owe their existence to HEK293. Big difference.
“HEK has been used to test common OTC meds like aspirin and ibuprofen.”
Apparently true in some cases, but long after-the-fact (subsequent to development) and obviously not central to the development process. Obviously something that occurs 100 years after development (aspirin), by independent third parties, does not fatally taint the product.