I think Wittgenstein's idea maybe more broadly applicable, meaning it isn't limited to natural languages like the Sapir-Whorf hypothesis. The author states: "One way to construe this Wittgensteinism very broadly would be to think of it as the limits of my idiom are the limits of my world, with “idiom” construed broadly to include any way of talking about the world, and not merely a particular language." So e.g. any kind of formal mathematics or anything that we can somehow represent syntactically and which we can understand (semantics) could be seen as an idiom.