I don't disagree with the conclusion but from my understanding it was made entirely on a theoretical basis. I would be interested in seeing an implementation of

I don't disagree with the conclusion but from my understanding it was made entirely on a theoretical basis. I would be interested in seeing an implementation of multiplexing benchmarked against separate connections. There are also (low-traffic) use cases where overrun of receivers is unexpected so you don't need an application-level ACK mechanism, just notification of overrun so you can handle it, e.g. by breaking up and restarting the application associated with the overflowing stream.