I used pods and tried out powder after one of his previous videos on this, it was pretty terrible even following his advice and using rinse aids.

I like chocolate milk, made by mixing chocolate powder (Nesquik) into milk, and somehow everything except pods manages to leave a film of the chocolate powder over everything. I haven't watched this video yet, but my suspicion is he's using bad pods - ones that really are just packaged detergent without the extra chemicals they often include in the pods nowadays.