It is one of those things that will work itself out. Managers and professionals who have to explain how their complex work relates to other departments and other technologies, create a diagram will clip icons and clip images that get across the point in ways that text by itself could never do. Both they and the people they're communicating to are quite pleased with the result. And none of them worry if a designer could have done it better. It meets the need of the moment.
Complexity is managed.
And the onrush of complexity and information overload are what is driving the rapid adoption of visual language in corporations.