In my eyes, the generic MN young adult is someone who:
Earns above above the average UK salary, despite being "just 21 years old".
They own their own home and managed to save for a deposit without any help from their parents or an inheritance.
They were top of their class at their (RG) university and participated in a wide variety of extra-curriculars.
They cooked budget meals from scratch and never once spent any time living off pot noodles, takeaway pizza and crisps.
They've had their license since they were 17, paid for lessons/insurance themselves from their part-time job and are responsible drivers who would never even consider driving above the speed limit.