For the most part, I enjoy watching Becky's videos. Like anybody's opinions, I take what I think might work for me and try it out.
As to her video on feed, from everything I have read, having extra calcium is important to the birds - as well as grit if your birds are not free range. I posted a thread
Easy DIY PVC grit and calcium feeder for your chickens which I built for my chickens and is working great for me. It only got one response, but that's OK. I do think having grit and calcium is important and now I have good dispensers that are almost waste free. I got the idea of the PVC grit and calcium feeders from YouTube, and posted the link to the video if anyone is interested.
Becky goes into a long talk about all those extra "treats" as I would call them. IMHO, the best thing to do is have a well balanced, formulated, layer feed for your girls available 24/7 and I don't recall her even mentioning that fact. Maybe she mixes her own feed. Anyway, I can get feed at various protein %'s so I don't bother mixing my own.
Becky must have lots more money than me because mealworms are VERY expensive where I live. The other day I was checking out the poultry supply at my local farm store and a 10 lb. bag of meal worms was something like $42.00!
I have been throwing whole corn into the coop all winter, along with some chicken scratch, and it encourages the chickens to peck and scratch the deep litter in the coop. Plus, the corn is supposed to help keep them warmer in the cold winter temps. But you need to have grit available at all times if you expect that whole kernel corn to break down before it passes. Recently, however, I have noticed that my chickens are not eating the whole corn as much as before, so I'm cutting back.
I don't think Becky talked about other options of supplemental feed, such as fodder, which is something I have done all winter and has worked out great for my birds. I grow barley fodder in Dollar Tree plastic dish bins and give my 10 girls a half dish pan of fresh, green, lush barley grass fodder every morning. They love it. They eat everything from the tip of the blade of grass down to the root mat. Any unsprouted barley seeds are quickly consumed. At any rate, it's the only green plants my girls get to see/eat for a good ~6 months out of the year where I live.
And what about kitchen scraps? I think there are a lot of people who are still throwing out kitchen scraps instead of feeding them to their chickens. Chickens are omnivores. There is very little on their list of things that they should not eat. They eat most everything cooked in our kitchen so our scraps and leftovers go to the chicken run. Again, only as supplement to their main commercial feed.
OK, my response is almost as long as Becky's video, so I'll end it here. But thanks to the OP for starting the discussion as I always seem to learn from the community and try to give back when I can.