Yeah because it isn't like the whole chapter started from a point of violence (Cutting his dick off) to him cumming from a kiss and blowjob.
Don't you think that 160 chapters later, people that read this series would finally understand Denji's convictions and desires (even when he stated so many times), and the whole construction to get at this point (discussion on the metro, the whorehouse being burnt) would let people finally get it.
And yeah, only americans are like this, because they can make stories where you mince people to meat cubes, but the moment you show a female nipple you went to far. 18+ call the cops, think of the children.
Americans are always like that, can kill and maim people and right but the moment something sexual happens, it is too far.