It does apply. Assuming a baseline(e. g. "literate English" or "colorblind primate"), a UX designer should be able to create an interface that allows for the engineered function to operate should the operating entity desire that action by a mixture of prior shared knowledge and novel information. If the designer is unable to fully convey the functionality, then to some degree, the designer did fail.

Is this critique to do with the div containing the text "Scroll down to read and explore"? It doesn't seem like a good critique.