Developers always had the flexibility to create custom UI elements/colors etc even in native apps (albeit not as easily as using CSS). Even in SPAs, most UI ele

Developers always had the flexibility to create custom UI elements/colors etc even in native apps (albeit not as easily as using CSS). Even in SPAs, most UI elements follow the same style or pattern more or less (bootstrap/tailwind etc). It's the entire UI design itself that's not user friendly for enterprise/business apps (excessive padding, comically large UI elements etc).