You can have cables, push rods, hydraulics, power assisted hydraulics, full hydraulic, and electrical actuators. As long as their control inputs are only from the pilot they are identical in every way but their failure modes.

There is big big difference between FBW and the aircraft generating control inputs on it's own. Boeing aircraft had two modes, 'manual' and 'auto pilot' The 737 MAX adds a third case, 'sometimes'

Boeing never told the pilots about the 'sometimes' part. And never told them that 'sometimes' has ultimately more control authority than they do.