Where in that video does she say "I had their poop tested and they found a moderate load of *insert worm name here*. I fed them DE for x number of days, then had another fecal done and zero worm eggs were detected"?Try seeing this video i just found her chikens look great
We all want to do things the most natural way possible, I get that, but if you're seeing evidence of worms you should treat them with a chemical de-wormer.