I think, legally, the crime of which this man has been convicted is irrelevant to this ruling for anonymity.
For all we know another person convicted of an entirely different crime but equally at risk of suicide would also have been granted anonymity.
Of course criminals would prefer to keep their names out of the papers, but the vast majority wouldn't kill themselves over it.
And he wouldn't be free from risk on prison suicide watch: prisons are notoriously bad at protecting prisoners from self-harm.