This is because UI programming is inherently extremely complex, especially compared to something like a stateless API tier running in AWS. It’s stateful software deployed to countless different runtimes on hardware you don’t control. Instead of a smattering of API routes handling well-structured semantic datatypes like `POST /burgers?pickles=false`, input comes in the form of arbitrary UI events from various input devices like pens, keyboards, mice, etc that must be interpreted to have a semantic meaning. Often there are hundreds of API routes (event handling elements) on screen at once in a complex application. UI engineers are perpetually frustrated by this complexity, and so some small percentage look for better ways to handle these issues.
Of course it’s best to avoid UI programming entirely, but in many domains it’s necessary.
Of course it’s best to avoid UI programming entirely, but in many domains it’s necessary.