He makes a loaded assumption that I don't agree with, "One of the key points of IoT is that it produces extremely large quantities of data which have very little value outside of the real-time element."

Still Streamer integrates the analytics processing part and that makes the system more complete as a platform. You most certainly need the real time part for IoT, but streamer can also be used for processing data-at-rest, e.g. forensic data.