Excellent tip at 2:25. I'm going to try that with my GB SFA!
I have been using that method of splitting kindling for a long time, and it works great. You can keep using it to keep getting pieces smaller and smaller until you have your "single match thickness" tinder. Works good!
If I don't have a backing readily available, sometimes I use the technique where you butt the log (laying down on the ground) against the base of a tree, straddle the log, and swing your axe into it horizontally. Doesn't work that great unless you have a really good tree, so I usually look for a down log to use the technique shown in the videos.
That is a cool idea.
One of the other issues is the chopping block. That is all excellent advice in the videos. But, it is rare in a wilderness setting to be able to come across a sizable log, that is flat on both ends, for chopping. It is also something that is difficult to create on your own. So, while that advice is great, you are probably going to have to find a safe way to split without a block as well.
I tried doing that but had no luck.. Will have to try it some more...
While I can not identify the wood he is using (I guess I could go back and look closer), I can tell from the way the smaller pieces are splitting, that it is an incredibly easy wood to split. Reminds be of hard, super straight grained ash. It basically splits if you sneeze on it
So, while that technique is an awesome piece of advice, it is also important to note that it is not going to work on all wood species. Especially super dense, not so straight grain stuff. I have seen some wood require the axe to be fully through to the bottom, and even then still not want to give up the goat
Of course, part of being a good outdoorsman is know your woods, and find the ones that will suit your purpose AND make your life easier

But, many times you get stuck with what you have. And that can mean splitting wood that is really a bear!
Good find KGD!!! And thanks for posting it for us!
B