Disclaimer : pedantic Little Prince fan rant ahead
I'd say the the Little Prince's world isn't really that weird : it's just our world, with a magnifying glass on things adults do that, from a child's perspective, make little to no sense. Or I guess I could say our world is strange, and the Little Prince reminds us how strange it is, because we've grown used to it and stopped questioning it years ago.
The lamplighter is pretty much any adult with a boring, repetitive, meaningless job, which doesn't seem so uncanny to me (though the Little Prince remarks at least, it adds a star in the sky, which is useful because it's pretty).
All this to say, IMO (which I'm aware nobody asked xD), your interpretation of the theme and why the little prince matches it is a bit clumsy, and yet, by making the Little Prince litterally super tiny, you somehow achieve something similar to the original tale : you put us in a house (a rather ordinary place), yet, from the point of view of such a tiny character, it is strange. Well, also there's the rubber duck in the vent. I didn't get, on the story side, why being seen by the Lamplighter would be a bad thing, but I get how it created an interesting gameplay.
Ok, my essay is over.
On the game side, even though I made it tot he door, I'm not sure I really understand exactly where it is safe and where it is not (sometimes I felt like I was hidden but still got caught). This aside, it was fun !