Yeah it's to prevent massive abuse. Tylenol poisoning is the number one reason for ER poisoning visits in the U.S. And UK. People need to watch their Tylenol intake. Swallow a bottle and avoid the hospital and you'll be dead from liver damage.
New guy here. PhD in molecular genetics. Run an R&D department at a large biotech. Mostly developing tools for functional genomics research and next gen sequencing assays for preclinical diagnostics.