Leaving aside whether I'd want that as a young professional with a good job, I'd argue that there is a difference between a college dorm or a shared house situation and sharing facilities with a bunch of completely random people over which you have zero control.
ADDED: And it's almost certainly a fantasy to think that shared amenities and residents would be young professional friendly rather than being more in line with those who rent SROs today. (Although as the article notes, these conversions are expensive--so they almost have to be luxury apartments--rather than SROs with shared facilities.)
I don't think it can get much worse than a shared college dorm. People shitting in communal showers. People not knowing how to do laundry breaking the machines. Building fire alarms going off multiple times per week. People having zero respect for shared bathrooms pissing all over the toilet seats and floor.
ADDED: And it's almost certainly a fantasy to think that shared amenities and residents would be young professional friendly rather than being more in line with those who rent SROs today. (Although as the article notes, these conversions are expensive--so they almost have to be luxury apartments--rather than SROs with shared facilities.)