>>45580676I figured it out
He needs pectorals
All birds and mammals with upper limbs require pectoral muscles or a variant thereof
Speaking realistically, Lugia would probably break or rip off its wings every time it tried to fly. Without the proper musculature, arms, forelegs, wings, etc will go limp and render the limbs useless.
This problem could be even worse in the water with pressures and trying to steer its body through the currents
He needs to work on his upper body