I was specifically mentioning building UI, i.e. the process of creating a set of screens with events to carry out the required functionality, which was what Delphi shined in. Web tech is about building distributed apps, so while you might repackage them as desktop ones using Electron, it's a massive overkill for 99.9% use cases and thoroughly suboptimal. Yet there aren't any GUI builders worth anything after 20 years of web tech and using libraries like React just increases cognitive load instead of reducing it by being unnecessarily verbose for little benefit.