Lots of things are stated. How many are actually proven/rational/demonstrated? You believe everything you read? No fact checking... no rational thought... no critical thinking...? Gotcha... I think.
I get my reliable information from sources NOT trying to sell me ANYTHING, and sources NOT not trying to BOAST about their yield, or whatever.
I'll certainly side with the decade plus research by numerous universities and even NASA on using LEDs for plant growth over a a single grower's experience -any day.