Johnson & Johnson is not a friendly medicine company. They have a long history of causing and suppressing information about harms in their products. It's quite likely that they were responsible for the Tylenol contamination scare decades ago.[0]

Aside from that, acetaminophen had always been a dangerous drug to hand out willy-nilly. It's a major cause of overdose poisoning and is known to damage the liver. How was it ever approved in the first place? I'd say the same way as J&J's other products. It made up half their profit for most of its product life.

[0] https://www.amazon.com/No-More-Tears-Secrets-Johnson/dp/0593...