At each stage, the most expert remaining users are left behind. Many professionals extensively use the CLI. The majority of the remaining professionals use a tr

At each stage, the most expert remaining users are left behind. Many professionals extensively use the CLI. The majority of the remaining professionals use a traditional GUI on a traditional OS. Most people using smart phone UIs are not professionals, but some of them are fairly expert in their interactions. Those using AI UIs are generally just crossing their fingers to avoid pulling their phone out. Maybe someday AI will be a legitimate user interface, but I don't think we know what that looks like yet.