Well, dear Mr Flamingo, that is because Crocodile is the greatest mastermind in this show.
And I am about to tell you why he is the absolute winner of this chapter while Mihawk tops the Best Copium charts.
Crocodile's old plan - military might - is ongoing!
Do yall even know about it? Sir Crocodile's goals and intentions arent mentioned among fandom, forgotten in the mists of time...
To repeat, Crocodile wants military might to create an organization that dethrones World Government.
You could say his dream is to be the next Imu, the King of the World. Probably the same thing Rocks was after.
He was after Pluton to ensure that the World Government can't stop his plans.
After "his wounds healed", which refers to willpower recovering from the loss to Whitebeard, he goes back into the "good old" New World.
Back to do what we saw him do in this chapter - form an organization of his own. An organization that mocks the Marines with its actions.
The last time he was going after military might, he was going after Pluton. That is something he gave up on.