While true, this is slightly overblown. I work at a liver transplant center where we treat patients with end stage liver disease and Tylenol is often the safest choice given these patients comorbidities. Granted, they’re getting their liver labs checked 1-2 times a day and are under close supervision but < 2g acetaminophen a day is considered fine. [I am not your doctor this is not medical advice]

My cousin worked in a toxicology lab in a hospital.

Way back in the 80s he was commenting on how understudied and under published Acetaminophen toxicity was.

In particular, taking Tylenol for hangovers was (and still is) a common but very dangerous practice.

As others have said, it is crazy easy to overdose on the stuff and suffer liver damage.