Well the truth is the very best indoor growers...the ones with the most experience were doing this well before LEDs were worth jack. So all the best growers from 10+ years ago learned and mastered HID lighting. Being a master at something requires time.
LEDs have obv benefits to new growers, the simplest being safety. That has nothing to do with end quality but explains why so many skip the cheaper option.
From a quality standpoint I have yet to see or believe anybody grows BETTER cannabis with LEDs. They may grow more, it may be more cost effective, but actual quality is not BETTER.
This from a relatively new grower, only grown myself with LEDs. Have observed HID grows for decades. Have sampled from around the country/world for 35yrs.
Simply put, it is different. The gent about to go from HPS to a Diablo will be able to keep plants at a foot away vs HID distance. What an adjustment to get used to!
Quantum boards do great. But to think they are better or worse...its just another option.
For most people who live in climates with 4 seasons or in particularly cold climates, there is another obvious option of both, changing them out for seasons. That's more work, but for those with cold climates I cant imagine a more efficient setup than HPS in the cold and LEDs when it gets warm.