I think as a whole it's just another pendulum swing in the market. Not good or bad, just novel. Something for the overly-analytical to spin their wheels on and generate a little money for the industry.
People act like nobody tuned their gear before the ranchferret. But my great grandfather tillered his own American Flatbows and had a spine tester in his shed for his cedar shafts. My grandfather had a corner of his garage with a bitzenberger and bow vise. My dad and I would watch ole T-Bone's tuning and form videos. People who go deep enough into the rabbit hole always end up there.
PLENTY of deer have been killed with cedar shafts, wooden limbs, and 250 grain fixed heads. PLENTY of deer have been killed with light arrows, hatchet cams, and mechs. PLENTY of deer will probably get killed with high FOC inserts and single bevel broadheads. Because deer just aren't that hard to poke a hole in at the end of the day.
The important thing is, how do you stay in business selling archery tackle when the guys with disposable income have already bought a bow, a case, 2 dozen ultralight shafts, and 2 dozen 2" expandables? The average joe is set for years if not life at that point. But if you can catch him fuming after losing a deer he poked in the shoulder and convince him that he needs all new gear...
And then, once that dries up, you catch him fuming because he shot a foot under a deer...
And if you're a youtuber, how do you carve out a slice of attention in a saturated market (because lord knows everything that can be said about how to throw one stick with another stick has been said and resaid). You give people "secret knowledge" counter to the prevailing trends. Works for youtubers, fad diet gurus, financial advisors, televangelists, and a host of other parasitic organisms.
There are some good ideas and advice in the Ash-fairy "movement". There are good ideas in the Atkins and Keto fad diets. There are good ideas in every single political party, religious ideology, underground movement, and internet forum clique (looking at you/us, saddlehunter.com members). And then there's some hoopla, ra-ra, BS memes designed to make us feel good about doing a thing that benefits whoever thought the whole mess up.
If you watch some videos, get some new info, let it marinate for a while, hold it up and look at it next to the other information you have, and determine that you could make a few changes to how you do things and obtain a comparative advantage...that's good. If you watch a video, shout "eureka!" and throw out $300 worth of goods to buy another $300 worth of goods...that's good too, just not for you.