Actually for network layer we need to implement much more complicated things: replace TLS. This is dangerous, of course. But TLS is source for HUGE lags in networks because of it's triple handshake. And on mobile networks ping usually big and application can try to connect in several seconds. When you remove TLS (like QUIC) then time to connect drops to 200ms and you don't need to wait for successful connection that also reduces latency. This is level of quality that Actor Platfrom try to satisfy.