Just like to point out that RNNs have internal state which isn't captured in this view, so yes, lots of NNs can be considered this way, but not all. It's the DS

Just like to point out that RNNs have internal state which isn't captured in this view, so yes, lots of NNs can be considered this way, but not all. It's the DSP equivalent of FIRs vs IIRs.