I once read that if acetaminophen were introduced today it 100% would require a prescription because of how dangerous an overdose is.
Unrelated, but it feels like an oversight that this article said nothing about how both acetaminophen and ibuprofen reduce fevers. They aren't used solely for reducing pain.
I kind of doubt that, to be honest, given how much more effective and less directly damaging it is during normal use compared to NSAIDs.
I find it interesting that people take these as fever reduction mechanisms. Fevers are a defence mechanism, not just an inconvenience. Maybe it makes more sense in places without decent workers' rights (like having a limited amount of sick days you need to manage), but it feels weird for me to actively harm your body's defence mechanisms unless you're in "you should see a doctor" territory already.