While I don't have anything against sexy language learning in theory, I feel like the execution here isn't great. The best language lessons I've had were highly

While I don't have anything against sexy language learning in theory, I feel like the execution here isn't great. The best language lessons I've had were highly participatory; you remember the sounds much better by making them rather than hearing them. Unfortunately the voyeuristic nature of the lessons really exacerbates the non-participatory structure, and you end up just watching someone else speaking the language instead of speaking it yourself. I only saw the example lesson in the article, so maybe later ones work differently, but from what I can see you're sacrificing quality of teaching in exchange for the sexy angle. I don't think it's worth it.