The 2014 dub emphasizes this line. In the original Japanese, it’s more neutral. In Kai English, Schemmel makes it sound like Goku realizes he sacrificed his son’s humanity for a tournament victory.
Let’s sit with that. Goku threw a Senzu bean to the monster currently killing his friends—because he wanted a fair fight. Episode 46 argues that Goku’s saiyan instincts are a character flaw, not a virtue. The tragedy is that Gohan, the half-breed, is more human than Goku. And to win, Gohan must kill that humanity. Look at the color palette in this episode. The sky is a sickly yellow. The blood (uncut in the home release, but notably dark red in the 2014 TV edit) pools like oil. The Cell Juniors don't just punch; they gnaw. Dragon Ball Kai 2014 -Dub- Episode 46
But the core of the episode is the 90-second stretch where Cell tortures 16’s head. The 2014 dub emphasizes this line
Compare this to the Z dub, which played electric guitars and drums. Kai 2014 treats the SSJ2 transformation like a possession. Gohan’s eyes go white. He laughs. Not a heroic laugh—a broken, hollow chuckle. After Gohan destroys the Juniors and snaps Cell’s Android 17 out of his body, Cell detonates himself. Goku teleports him to King Kai’s planet, sacrificing himself. Let’s sit with that