But let's not say "teachers for education, doctors for medicine, non-specific professionals for the railway.". They are not equal.
Plenty of rail industry professionals responsible for future planning do in fact have direct understanding and experience of front line operation and day to day capacity issues, having been there themselves. In the same way a teacher may progress to being a headteacher with less classroom time (but more policy influence) than the front line.
i think you may be the one with the straw man argument now.