Thank goodness nobody was hurt. Yes you should inspect everything you buy. Yes hinges should be pinned. Yes the glue should wick into the hinges. Yes we live in a imperfect world. Bottom line the manufacture did not glue the hinges properly. Bottom line they and only they are responsible for the plane ,motor, radio and any other thing that broke. Will they own up and replace everything? I doubt it. Not a fan of Great Pains....I mean Planes.
One good thing will come out of this. The next plane will have pinned hinges with better glue joints. Probably not from the manufacture.[

] But hey,I could be wrong.