This. I work in lighting and most of the people doing specification have never even heard of flicker. I usually get brushed off as some kind of impractical visionary.

I am on a mission to make lighting healthy. That's why I made Bedtime Bulb: https://bedtimebulb.com/ It has the lowest flicker I've ever seen in a bulb form factor—even less than those claiming to be "flicker-free."