That was a very informative video, especially important info about the calcium /phosphorus ratios, getting babies to eat veggies, natural substrate etc.
Myself and others on this forum have been promoting the use of a sand/soil substrate for years.
A few VERY important things that must be addressed are with the feeding of hatchlings + babies. First I'll mention that many people today start out with a baby that is much smaller than the one in the video, unfortunately even 5" from a pet store. [ It is better to start off with at least a 6-7" beardie as a rule ] These babies can't eat a prey item like the one in the video in most cases that are about the size of it's own head, they need smaller insects and more of them than 5 a day. For instance, the O.P's beardie has crickets which are much smaller than the [ relatively ] huge dubia seen in the video. So for the O.P's dragon on this thread, 15-20 is closer to the correct amount. So the SIZE of the insect makes all the difference, and not everyone can get or is allowed to have dubias.
Size of enclosure : If a person has a 5-6 " beardie and for some reason it's fearful or just not in the best shape it should be started off in a much smaller enclosure, such as a 20 gal. that the family has laying around or even a plastic tub. As for beardies not being afraid of wide open spaces, they are not born in the wild....they are hatched and often first raised in plastic rearing tubs. That's some, not all. But back to having a fearful or slightly unwell baby you can start them off in a smaller set up like the one I'll post here at the end. I edited to squeeze in that a small or sickly dragon can drown in a water bowl and some disoriented babies sleep in them so if you use a water bowl you could take it out at night to be on the safe side.
I agree that many health problems could probably be avoided by not over feeding insects to our beardies, that's good, sound advice presented there. I disagree with skipping to every other day insect feedings when a beardie reaches 30 grams though. Will it survive ? Yes, but so could our children survive eating skimpy meals every other day but it's not something anyone would promote. So I agree that there's a lot of good info in the video but the raising of babies on 5 insects a day, then skipping insects every other day is not something I think we should do. With adults, yes but babies, no. And yes, I've hatched + raised loads of babies starting back in the early to mid 90's . Here's a pic of a simple set up that could be appropriate for a new baby that is not doing so well. [ There's no baby here, just a display ] With a small area for basking, an appropriate watt heat bulb and uvb. You'd also add a small log on the cool end.