I think the gyro as an aircraft has huge advantages in the safety of low level flying, But, if someone doesn't carefully overfly those areas beforehand for wires, people, structures, antenna, etc. that extra margin of safety evaporates.
I think Gyros as an aircraft also lends itself to overconfidence in lower time pilots. The dangerous times as was explained to me in an Air Force accident class is, Absolute beginner where someone might freeze and lock up, or doesn't know what they might do is impossible or unrecoverable, Low time, where the pilot gets a good sense of flying the gyro and his or her confidence rises and surpasses their skills and can lead to flying in such a way that they get in over their head.
High time pilot where their huge experience and extreme skills are subverted by lackadaisical flying and carelessness.
It would be my hope that we could develop a black box for gyros to get a better handle on the many unknown causes of accidents. Perhaps a combination of the rotorhead stuff from Mike, and data logging.