Something intuitively rubs me the wrong way about calling any parts of white light bad. I am no expert, at all, but it seems like plants use sunlight holistically, using blue light to detect overall light levels, R:FR to trigger shade avoidance behavior like elongation and early flowering. Multiple signals, quantity and quality.
I can look out my window and see that more than the mere presence of green light is needed to trigger a shade avoidance response, not to mention this:
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That's not to say we can't fool our plants into doing what we want, but a quick gut check and careful reading never hurt when reading studies. Any conclusion that calls white light bad should be pretty suspect, since white light is literally what drives 99.99% of life on the planet.