In re-reading the article, the plane and engine were both "kits." Does this mean that the pilot (or someone else) purchased these kits and assembled them?
If so, who does the QC on this kind of thing? Who monitors and maintains that the aircraft is safe to use? In short -- who is accountable for the death of this jogger?
I find it hard to believe that if the plane had crashed and killed just the pilot and his passenger, the family would not be up in arms suing the manufacturing company. Likewise, if it had been a car accident (with, say a Toyota?) that the jogger's family wouldn't be suing the company as well, or even the pilot/driver, however accidentally the death occurred.