Unless they have significant savings and/or some passive income, or they don't have family and can live with their parents or adopt a very frugal lifestyle, the

Unless they have significant savings and/or some passive income, or they don't have family and can live with their parents or adopt a very frugal lifestyle, they will find their focus distracted by worries over everyday things like rent and bills. They are more likely to make poor short-term decisions, or have to supplement their income to do things like consulting or part-time work, to literally keep the lights on. As an investor I'd be very concerned by this move.