Who does what cannot be based on individual opinion no matter how correct it sounds. It depends on manufacturer's recommendations, company policy and the general experience level of the new recruit into the right hand seat. Equal competence in both seats is a desired state but not always the case. Most places a copilot is inducted with a few hundred hours and he will take time to reach that. Besides if Airline lays down a policy it cannot be brushed aside because should an incident occur the regulator will treat as violation. Forget QZ8501, in case of Atlas handing over a perfectly normal aircraft to FO resulted in a crash. Off course the Capt is supposed to hand over doing head down work. Coming to ECAM online few lucky ones will get to do it. Most will retire with sim experience. Every line pilot cannot have his way of doing things. There has to be standardization. Coming to FO having more experience Jetstar had an incident where the more experienced FO was making a mistake and the capt who was PM out of respect for tmore experience and being acquainted didn't intervene. A case of reverse gradient didn't help.