When I watched it the ultralight fell into the trees and made it about
halfway down before the camera cut out.

Yes, and you can also see that, before the shutdown of the engine, the
guy is pulling the yoke quite a bit to gain altitude.
Looks to me that he was pushing the plane over the limits, and the
engine shutdown resulted in a catastrophic failure. Had the rate of
climb been less steep, he probably would have made it back to earth in
a quieer way. As far as I can tell, there were many places where to
land safely, around there.

Anyway, an ultralight is as dangerous as any other plane, IF NOT WELL
MAINTAINED.

Piero