&gt; The author invokes the old myth that &quot;digital audio must be sampled, therefore it&#x27;s lower quality&quot;<p>Actually, the author made a different argument: That the removal of the higher frequencies in PTSN PCM combined with the low frequency of modern cellphone background noise made for something much harder to understand. As someone quite familiar with the subject, I think this is a very nuanced and compelling argument.<p>&gt; Saying that the digital protocol is &quot;permanent&quot; is basically a lie;<p>The author also did a spectacular job dealing with this in an understandable way too, talking about how it&#x27;s baked into so much of the infrastructure.