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It does not "aim to update UDP", saying it focuses on "data streams" is pretty nonsensical when talking about protocols, and its main use is not "to run a TCP like flow and congestion control mechanism over UDP" (which would not be useful in itself).
"data streams" are not "nonsensical", is common nomenclature for continuous sensor data and control signal streams that are typically fixed bandwidth continuous streams. Like RTP or other things used in Live Streaming video where delay is unacceptable. Or in the case of robotic control systems where again, it's about pushing the most current information for control systems to operate. - John Sokol