Abusing addressable LEDs

They said it couldn't be done.
They said it shouldn't be done.

But if it actually works, is it really a stupid idea?

I had a silly idea about a lazy way to add WS2812 LEDs to an existing installation without needing to take it all down and re-installing it. But will it really work?

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This isn't the only way to do it. It's probably not the best way to do it. But it's how I did it. ... https://www.youtube.com/watch?v=JlltJcHJhUU