Agreed - jeez, a call center employee answering an email about doubles in F class has no clue about the policy - and will take the conservative answer approach. They aren't writing to someone at inflight services asking a person with a day job what the doubles policy is. This notion 1KVoice is fielding just about any question - forwarding them to employees with a day job - and actually waiting for a response - and then actually following up is practically non-existent.

I got doubles and didn't ask for them last week HNL-LAX red-eye.

Probably proactively asking for a double is a red flag for some FA's.