So basically, Steven Universe is known for using his talk no-jutsu for whenever he's facing villains, and it usually works bc plot armor. However, Griffith/Femto (the guy shown in the picture) is known for being an irredeemable piece of shit, not exactly someone you can just talk down.
If you want to know why Griffith/Femto is a character that is considered an irredeemable piece of shit, watch Berserk (1997), the full show is available for free on YouTube.
