What would you (those who think they should be named) gain from knowing their names? The chances are you won't know them, so all that will be gained is to satisfy curiosity.
If they are innocent, their lives would be ruined. If they are guilty, we need to decide whether or not we believe in rehabilitation.
I appreciate that there is no going back where murder is concerned, but either we try to rehabilitate young offenders or we don't. If we do, then releasing their names is a good way of ensuring that they won't be able to make a new life when they get out of jail.
If we (as a nation) believe that young offenders should be treated the same as adults, we may as well give up on trying to help them to live a decent life. If 17 is 'nearly 18', then 16 will become 'nearly 15' and so on.
None of that is to diminish the seriousness of the crimes.