What is it called when one deliberately states the opposite of what they mean to drive home a point ? I thought the preceding 'interesting take' was a dead give away.
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.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...