I disagree. This guy sounds out of the loop to me. People always want to hear new mixtapes.
He made a few valid points that if no one is listening to your individual tracks, why would they all of a sudden wanna listen to your entire mixtape. Take Datpiff.com for example. There are literally thousands of unknown artists with mixtapes. I only download the artists I am familiar with. He says it's the easy lazy way and that nothing still replaces good old fashioned hard work of dropping single after single and I tend to agree.