Its marketing + the "conspicuous leisure" class over uses Japan all the time to signal/buy status. If you can afford it great. If you cant, its not the end of the world.
Onsen are available at all price levels, and popular with blue-collar workers; they are not a high-class exclusive activity. It's not like having dinner with a geisha or something.
Onsen are available at all price levels, and popular with blue-collar workers; they are not a high-class exclusive activity. It's not like having dinner with a geisha or something.