I think it works pretty well. Any tool will have good aspects and bad aspects, and its functionality will only be as good as our ability to make use of the good aspects while limiting the bad ones.
Humans benefit from fire because the good aspects of warmth, light, and cooking all vastly outweigh the bad aspect of the danger of catching on fire, which can be mitigated relatively easily by not bringing flammable things near it. If we ourselves were highly flammable, fire would be far too dangerous to be useful.
The obvious AI metaphor points out how, just like paper beings covered in gasoline are weak to fire, human beings are weak to a friendly voice speaking with confidence, and will succumb to it just as quickly if exposed. Any benefit it might have otherwise been able to give is outweighed by the danger of our natural affinity for believing what is told to us by a trusted figure and stubbornly treating it as undeniable fact for the rest of our lives.
