What others are 'missing' is the question!
It cannot be flown as advocated by you two. Is 2.5/1.5 minutes enough time to reach 6.4DME outbound? That requires more than 250kts procedure speed outbound for Cat C/D and 155kts for Cat A/B and that gives no room to intercept the radial either. Everyone happy with that? I can see errajane's logic in flying the 'turn' but more terrain info is needed. Since there is no 'do not exceed xx DME outbound' warning one HOPES there is no terrain problem!
Why on earth the turn point is not defined on DME I cannot fathom! Not a chart I would be happy with and I would probably turn at about 8D like errajane to give track intercept space. Back to company for a decision, errajane, I think!