Momo was hanging while Kaido was fighting the scabbards for a while. King decided to kill him because it’d demoralize the samurai. Same thing here. You just want Coby to be more important than he is.
Bullshit will say it again
KAIDO WANTED MOMO DEAD. SO KING GOING TO KILL MOMO MADE SENSE.
BLACKBEARD DOES NOT WANT KOBY DEAD OR CAPTURED WHICH IS WHY CHAPTERS BACK SHIRYU TOLD WOLF, VASCO AND PIZARO TO CAPTURE HIM. TO ADD AOKIJI REITERATED THAT ITS WOULD BE DETRIMENTAL IF GARP LEAVES WITH KOBY.
So what you stated doesn't make sense lol