Boeing 767 Emergency Slide Mistakenly Deployed — Is This the Flight Attendant’s Fault?

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It’s not unusual to see individuals get blamed for systemic errors and problems.

Case in point, this article:

Delta Air Flight Attendant Makes Expensive Mistake After Emergency Slide is Accidentally Deployed Shortly After Landing in Dublin

It seems like a fact that the flight attendant deployed the slide. But is the mistake their fault?