Process engineers or some others might be able to replicate tasks for processes or equipment they’re familiar with, but there are likely far fewer people in engineering roles who could do that than there are production line workers. Even then, knowing how a process or piece of machinery works certainly isn’t a guarantee that they can perform certain tasks to level of quality or speed of a line worker who’s been doing it for years.
Process engineers or some others might be able to replicate tasks for processes or equipment they’re familiar with, but there are likely far fewer people in engineering roles who could do that than there are production line workers. Even then, knowing how a process or piece of machinery works certainly isn’t a guarantee that they can perform certain tasks to level of quality or speed of a line worker who’s been doing it for years.