Earlier quoted context omitted.
So the rule of thumb is that: if the pictogram is always same, then as in Shannon's model, it conveys no information, and thus is decorative. Discard it. One of first programs that put pictograms in menus was Microsoft Word. But the way Word did it was entirely different from what we do now. Microsoft Word had toolbars and their buttons, of course, were mostly pictorial. Toolbars could be turned on and off and users…
> thus is decorative. Discard it. Or keep it since decoration makes interfaces feel more alive. Not everything NEEDS to be useful
... until the not-useful becomes distracting and/or causes information overload.
In the case of Apple, I've been a user of the Accessibility menu ever since they introduced the stupid parallax wiggling of the icons. Right now i use: reduce motion, bold text and reduce transparency. Because I want to see what I'm looking for when using the phone and not squint through pointless effects.