Imagine unironically trying to argue that the Biscuit Soldiers can block this:
Crackers defense is highly underestimated.
He can hide behind his Biscuits + his main biscuit soldier and change the trajectory of Kings beak attack while slowing it down the more biscuit soldiers it passes through.
This is what Katakuri will suffer if he tries to get frisky in CQC with King:
Please. For Kat that is child's play. He gives King a free training session on how CQC really works. Like I said, King will have much fun punching the air. Funny enough, while Kat needs to figure out how to damage King , King needs to find out how to fight this:
King plays ping pong with Smoothie:
Yes, as long as Katakuri allows it.
Or just bombards her with his Wind Scythes while flying around her:
You're underestimating Smoothie when you expect she gets folded by these casual wind scythe attacks. She may get send flying but in no way is she getting one shot, and again, Katakuri won't just stand around doing nothing.
So no, Smoothie and Cracker cannot carry themselves against King.
They can because their Big brother is there who takes the main stage of battling King, without him they're screwed but that's just the difference he would make in the fight.