A lot of Microsoft Office and adjacent programs have customizable UIs almost to the point of absurdity for decades yet it's uncommon to see anyone actually change the default layouts, adjust panes, or view modes.

Maybe it's because everyone hates toolbars and ribbons, but why? Perhaps it's that the number of options is overwhelming. I am fairly certain most humans have seen code and their naive impression is that it's "cluttered"/"noisy". That impression is not because it's text or a ton of buttons staring back, but the cognitive overhead of actually understanding what you're looking at. LLMs can create or suggest things, but the user still has to comprehend something to continue interacting. That's where the interaction falls apart.

What I can see is LLMs taking natural language input and curating catalogs of software or plugins. As it stands searching for software by feature is a terrible experience even for devs.