As someone with some relevant industry experience, I can tell you that nearly 0 professional screenwriters or development executives are consciously sticking to a rigid structure as prescribed by some book. Instead, what you're seeing is the difference between after the fact analysis and the process of creation. Things like the three act structure and certain beats appearing in many movies exist because those are just natural ways to tell a story. The three act structure is, at the most basic level, just the series of beginning, middle, and end. Of course any movie has these sections by necessity and there are better and worse ways to navigate through each.

Just to be clear though, no one is sitting around talking about Snyder's beats or terminology. In the industry, the only terms you'll here from these books are discussions of the three act structure because that is so vital to this sort of material. All that said, I do think the books are a good starting point for someone who wants to think critically about story, but don't think that these are blueprints for Hollywood success. If they were, every screenwriter would be paid scale.