What is the definition of an "armchair traveler"?

Question:It's mentioned in a short story called "The Leap". "He was called in to look at the set of her arm, which was complicated. He stayed, sitting at her bedside, for he was something of an ARMCHAIR TRAVELER and had spent his war quietly, at an air force training grounds."

Answers:
The ww1 propaganda poets were called 'armchair poets' as they wrote about war without actually having gone to war.
I am assuming an 'armchair traveller' is the same idea.

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