Cody's background is wildland firefighting where trees are cut a little below waist height so as to make the safest cut. Wildland firefighters are not loggers where saving every inch makes the faller more money. In addition he is cutting his own trees on his own property. I suspect he will flush cut the stumps since he will likely be driving vehicles or equipment there. As far as saving the butt flare as some of you advocate, are you scaling from the big end? Do you know what I just asked?
I will say I do not like his 4" or bigger stumpshot at all. In my world I want a 2" to level stumpshot for most every conifer. I'm not talking about a situation where a jack is used or a potential limb locked tree, just a normal tree. Hardwoods are a different story.
Anyway... Cody seems like a very nice and polite person. I have seen some of his other projects on YouTube and I think he is an artist. Does he make mistakes? Yep. What is that saying about casting the first stone?