I’d argue that speeding in itself, while a contributory factor in some bad collisions, isn’t quite on the same plane as someone showing significant indications of likeliness to willingly harm others. Yeah the 20 MPH over would certainly communicate a particular disregard for some level of safety, but it would depend more on the circumstances. 20 MPH in a residential area? Yeah, problem. On the interstate? Why were you impeding traffic?