That's great to see. Audible is one of the very few services I pay for even knowing how bad it is to reward its creators. Whenever I can, I try to look for an alternative but ultimately audible just has everything.
So even if there's still much to be done and not a trustworthy company, it's good to at least see some improvement.
Also kudos to Sanderson, he gets a lot of flak on the snobbish reading circles but not everyone would have done what he did. He's got a heavy position in the industry and used it for the benefit of many others.