Overreacting. Luffy is an ant to Imu still. Every time he comes in direct confrontation, he gets send flying and L'oki intervenes with Gabum telling Luffy to wrap it up and run.
Right now I find Luffy shockingly weak, it's crazy how much stronger L'oki is looking and that's without his hybrid. I want to assume his early arc injuries are no issue anymore otherwise it gets too crazy.
But yeah, Imu is certainly not moving like a typical EOS Shonen villain would. If he shows off another transformation and doesn't accomplish a thing that's kinda embarrassing.