Their comment makes sense if you interpret "the C compiler" to mean "mainstream C compilers that 99% people use in production" or even just "gcc and clang".
We're talking about concrete things in the real world here, not philosophizing about the language spec.
And yet small device C and Gcc/clang are onky kissing cousins and we (well people that aren't me: ustedes) still rhetorically lump them together as a single language.
We're talking about concrete things in the real world here, not philosophizing about the language spec.