There is value in having breath of experience as it allows you to produce solutions that either have less impact in metrics you might ignore or to better fulfil

There is value in having breath of experience as it allows you to produce solutions that either have less impact in metrics you might ignore or to better fulfill requirements that are difficult to observe without having been in the field. Should a //everyone// be in other roles full time? Depends. Should a //everyone// have had exposure to expand their knowledge? Yes, absolutely. It should also be refreshed so they don't forget. Most adults from time to time are exposed to this for 'common day to day tasks'. Either in the form of being an assistant to someone else doing a task or in directly doing it themselves.