The case of the explosive cupboard

My friend innocently opened the cupboard door. Its contents, stuffed and stacked like a vertical domino track, exploded out at her.

1. Was the friend or the cupboard at fault?*

2. This scenario happens a lot between people, too. 

3. Instead of fixing the issue with the cupboard,  we keep pussy footing around it and trying to avoid semi-surprise explosions. 

4. Then we blame the friend, not the dysfunctional cupboard. 

*There may be a logical 3rd option, that it was the person who rigged the cupboard who may be held responsible, but that ruins my illustration, so I'll leave it out.