This depends on what is meant by competency –
The answer is easy. If an airline pilot (Boeing/Airbus) was told to undertake his instrument rating sequences solely on raw data, and no automatics, then at an educated guess he would probably fail to remain within regulatory tolerances in most areas. In other words he has failed the skills test and by definition is incompetent.
Currently, instrument rating tests in sophisticated airline simulators are 90 percent flown on full automatics with an occasional nibble at hand flying. That does not necessarily add up to manual flying competency. At an Asia Pacific Flight Safety Forum in recent times, a senior management speaker made the point that practicing a manually flown ILS once a month on line does not ensure currency at manual flying.