Are these supposed to be practical defenses, or a list of defenses the author thinks are valid? Misusing hashes and cryptography to obscure your licensing schem

Are these supposed to be practical defenses, or a list of defenses the author thinks are valid? Misusing hashes and cryptography to obscure your licensing scheme doesn’t address the fundamental weaknesses that your software is running on someone else’s computer, and you have no control of it once it leaves your servers.