Hardwood has grain that runs in at least 2 directions. Hardwoods can be quite strong. Bamboo is a grass, the cellulose fibers (the grain) is laid down in one dimension, it is a linear grain, minimal cross linking. Actually bamboo is not a "strong" as typical hardwoods, such as oak, walnut or pick your tree. The linear grain of bamboo is what makes it so easy to split, and split in long straight strips.
I did watch all 28 minutes of the Ryan Neil video. I have mixed feelings, it really was mostly new to me as how to manipulate a chunk of bamboo, yet it was so obvious, that I kept saying to myself, duh, I could have figured that out. But I had not figured that out, partly because I had not tried, partly because it was not as obvious as the video made it look.
And of course Ryan does use 20 words where 10 would suffice. But I am guilty of that myself. Especially when I can type with 8 fingers and 2 thumbs. So Kudos to Ryan, it was informative.
The chisel point on the chopstick is what Ryan is pointing out as important. Superior to a flat tip. Key in Chisel Point, there is a flat side, and the opposing side is where the bevel is. Makes sense in theory, I'll have to make some and see if it really makes a difference in practice.