I very much doubt that there is any human interaction on the Amazon end of this workflow.
What seems more likely is that because this doesn't generate revenue it gets the minimum resources necessary to complete the request within some legally mandated time frame. The request probably sits in queues for most of its life.
If a court order requests these same data, I suspect that it can be produced in under 24 hours
Very little about GDPR was designed with technical reality in mind. It's a grand example of using the mallet of law to try and beat the world into the shape someone wants it in, ignorant of why it's in the shape it's currently in.
What seems more likely is that because this doesn't generate revenue it gets the minimum resources necessary to complete the request within some legally mandated time frame. The request probably sits in queues for most of its life.
If a court order requests these same data, I suspect that it can be produced in under 24 hours