Can’t fault you for feeling that way. I definitely don’t think anyone should be exempt from responsibility, I meant blame in the more emotional “ugh, you jerk” sense.
If someone can’t fulfill their responsibilities because someone they depended on failed them, they’re still responsible for that failure to me, but I’m not blaming them if that makes any sense.
Power outage or not, the store owes me an ice cream cake and they need to make things even between us, but I’m not upset with them for the power outage.