Comment by aosaigh

I agree with your points. I think the main issue is that most developers don’t consider UI.

They consider app functionality and features, or look-and-feel and design, but they ignore UI (or don’t know what good UI is).

Like you described, even a simple search bar requires careful thought and experimentation to get right.

Another issue is UI libraries. People plug these in thinking they solve everything but in reality they only get you so far.