Probably because most people realize that it’s a horribly unpleasant way to go about it?

It's a pretty terrible way to go. Death doesn't come immediately; you seem fine at first, and then about 3 days later you suffer intense abdominal pain and vomiting. At about 4 days you realize your liver is irreversibly shot and you're a dead man walking unless you can get a liver transplant. Then you enter multi-organ failure as your body and brain shuts down.

Acetaminophen poisoning actually featured on two episodes of House, and one of them had the suicide plotline. In S05E11, "Joy to the World" they suspected an overweight teen OD'd on acetaminophen trying to kill herself, but the actual diagnosis was eclampsia from an undisclosed pregnancy. In S06E10, "Wilson", a friend of Wilson's suffers acetaminophen poisoning while trying to manage his back pain.

https://house.fandom.com/wiki/Joy_to_the_World

https://house.fandom.com/wiki/Wilson_(episode)

Calling women females and men men in the same sentence is really something. Same with the smiley face in a comment about suicide.

Intentionally overdosing on Tylenol gives you a day or so afterwards to panic and seek medical attention and probably live instead of dying a horrible death. More violent means do not give you any time to retroactively back out of it.

And, yes, in America at least, some lucky people do get liver transplants after acetaminophen overdoses, occasionally even intentional ones.

Most intentional overdose suicides are hoping to drift off to sleep and not wake up. That is NOT what happens with an acetaminophen overdose.

It'd be like intentionally eating death cap mushrooms.