This article is from 2015. By then it’s been 10 years since the company started, and he already left it. In the article he explains that still only 25% of the cacao used in Tony’s Chocolonely is guaranteed slave-free, let alone that they’ve had any significant impact on the industry at large. He says the situation of slave labor in cacao industry has only worsened. Tony’s has changed the message on their product “100% slave free” (which was false advertising) to something like “working together towards slave-free chocolate”, which he concludes to be meaningless marketing. It’s rather bizarre that such a message is allowed on a product that contains cacao from slave-labor…
But a fair point nonetheless.