> Obviously a door with a handle shouldn't be a push door, I don't really think you need to write a book about it.

And yet we've all encountered push doors with handles many times.

> And the types of people creating bad design are generally constrained by cost, time, or practicality, not necessarily by education.

Good design is far cheaper and easier than bad design in the long run. Being able to articulate the benefit of good design such that stakeholders provide the resources for good design is perhaps one of the most important reasons to have such an education.