It's part metaphorial and part literal imo.
When my father died it felt like the light had gone out in the world.
Fluorescent could be the light from the hospital.

And it doesn't matter what's been posted on this forum as I've only been on here a couple weeks so I'm unlikely to have read every post.

The 's' sound in 'siblings' is identical to the 's' sound in 'spewing sympathy'.
Listen and I'm sure you'll hear it too.