I think we might have a double whif here of missed *or miss-used* humour.
The humour was not aimed at you. *s*
Of course a highly reflective surface 'reflecting' light from another source, can itself be considered a source of light, can be legitimately called 'a light'.
After all, who actually built that there lighthouse up on yonder hill ?
We must repent, brother, from the errors of our weighs.
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