Bummed to hear this. Treehouse is a great education platform, and their courses - including their WordPress courses - are some of the best available.

I would have thought, given the popularity of WordPress especially among self-taught developers that probably use Treehouse, that it would have been a major revenue driver for them. But obviously it must not be.

I wonder if part of the issue is that there is already so much free educational content available for WordPress online.

FYI - not positive, but last time I looked, I think the Lynda courses, while very well done, were also getting a bit out of date?