A significant percentage of youngsters who catch 19 need medical care to get them through it. The need to provide medical care to 20% of infected people is what this lockdown is all about. Without medical care, a 2% zap rate becomes 20%. Italy is just turning people away from hospitals, because they have no room. Their zap rate is close to 9% substantially because they can only provide medical care to about 9% of infected, instead of 20%.It will, but age has less to do with it than previously thought.
Many youngsters need medical care too. The medical care thing is not an elderly only phenomenon. The difference is that a 20 year old who receives care will almost certainly survive, while an 85 year old who receives care may only have a 85% chance.