You are right. But @Dyna Smart do not provide much details in their report: Replaced themselves or by FxTec? Source of the replacement screen? Installed OS?
My experience is that, in lack of more information, you never know what people understand by "not working at all", especially when they are at a certain level of frustration.
Hell: I myself have sometimes said my Pro1's camera was "not f**ing working at all!", although this is objectively far from true ... 😉