he is mostly right ...........but with the last few years and all the breeders using different genetics to get the starter auto it really depends on the breeder and the strain
i been running test
i did a 20/4 for my last run the whole way i was happy with the results
i am currently doing a 24/0 run and one of them is well i know atleast 2 oz on there now and less then half way tho the flowering cycle for that strain 10 weeks instead of 8 or 9.........the other one looks more like t5 flowering (but having a ph issuse)
this is how it works ,,,,,,,,,,,,,,so for me the longer the light the thicker the buds ............the off time makes them all resien up
check the strain details and other ppls runs to tweak yours to get what u want from it