This is kind of the opposite of Hyrum's law, actually, in that the protocol promises one behavior but what's actually universally supported in the wild is only a subset of that promise.
He's still right because my experience suggests that it is 100% likely that somewhere, some system relies on a bug in the TCP protocol stack of another system causing a segfault to shut down something critical.
He's still right because my experience suggests that it is 100% likely that somewhere, some system relies on a bug in the TCP protocol stack of another system causing a segfault to shut down something critical.