I thought this was a very good idea especially if you start off with older nursery trees that will produce soon.
Of course your plant zone will determine just how well this can be done.
I can't believe how many people plant trees that don't produce. They find it a nuisance to clean up the fruit/nuts. I figure if I'm planting a tree, I want it to feed me.
I like this guy, have seen many of his videos on youtube, but much of what his group talk about, has been done by small farmer for years.
A small farmer is less than 100 acres in this post.