The legal proceedings here are all a bit 'third world', as is the way with many legal actions in Greece. Rather than conduct a sensible investigation to ensure it does not happen again, the route of many third world nations is to go for litigation and 'heads on poles' - you must always have a scapegoat after all. I am reminded of a similar approach to the biz jet colliding with the 737 over Brazil as another similar example of mishandling accident investigations.
As others have stated, if a pilot has passed his checks even after remedial training then he is 'fit to fly'. We can never go down the route of canning a pilot because he failed a check in order to pre-empt a crash. Clearly if there is a pattern and the individual shows no signs of responding to training, then that is a different matter. There is always a balance here and there is no evidence that I have seen to tell me that these pilots were not competent to fly the aircraft. There is no doubt they made mistakes on the day (have we not all done that?), but that is very different to saying they were intrinsically incompetent.