While that's true, the OP's solution is one way to help promote thicker stems if...

polyfractal on June 27, 2017 | parent | context | favorite | on: Show HN: GreenPiThumb – A Raspberry Pi Gardening B...

While that's true, the OP's solution is one way to help promote thicker stems if your lighting is sub-par. E.g. more light is best, but failing that for some reason (budget, space, whatever), stimulating the stems is a reasonable backup.