Yeah, no it isn’t. If anything it’s an indictment of that nature. However it is a mechanistic explanation of how these conditions emerge in supposedly legitimate supply chains. It’s very common, unfortunately.
You’re correct that the largest purchasers of certain high-value crops can use their stranglehold to improve conditions; a lot of them claim to do so and use this in their own media campaigns. That’s why this is such a fuck-up for a company like Starbucks versus, say, a small Scottish berry farm.