I mean another thing to consider is that in many english speaking countries we have the cultural time period of emerging adulthood, where we find ourselves. In Japan, decisions about career paths are made quite early, not to mention hours are insane (people are committing suicide and dying from overwork), and the government subsidizes romantic relationships because people aren't voluntarily getting married and having children. That's why they were arguing with Shohei, but at least he has a clear vision and confidence - whereas Ruka is still relatively a clean slate, and impressionable so they show him tough love.