The adult argument has absolutely fallen through because adults' attendance is tracked in another situation. So it's not a matter of being adult. It's a matter

The adult argument has absolutely fallen through because adults' attendance is tracked in another situation. So it's not a matter of being adult. It's a matter of what the specific relationship is of the student to the university. It's ironic you mention psychologists. Therapists, personal trainers, life coaches, and other 1-to-1 service providers are the most likely to fire a customer for not attending. I personally know someone whose vocal coach made an ultimatum about attendance and ended up firing the customer. This is all very much adult. In the end it's the sad consumerization of higher education in America. The pricing makes students so bitter as to demand "better service" rather than "better education". A university is more like a job in most of the world.