I flew with cadets with around 300 hours total time in the A330, most did very well, they could fly the magenta line, program the box and recite the FCOM line and verse with very limited understanding of it's meaning. If it was not on ECAM or in the QRH, we are screwed. So technology has replaced experience, it works up to a point.
I recall at 300 hours I was only just allowed to take the club's Cherokee 6 for a burn.