Well there's a reason all the WYSIWYG UI editors died out. They are a quick way to whip up a passable UI, but usually turns out to be quite ugly under the hood, hard to reuse, and a pain to maintain.
Delphi is really from a different age, simpler times, when the common paradigm was having the app directly connected to some sort of SQL database, which serves as a stable, static data source for the UI. Making glorified database editors is what it was really good at.
These days.. things changed. UIs need to be flexible, reactive, reusable, adaptable. UIs that can handle uncertain states, asynchronous data flows, change dynamically and so on. SwiftUI / React / Flutter all ended up at the same paradigm, it's a much more advanced way of doing things. Also, high level languages are much more pleasant to work with.
Delphi is really from a different age, simpler times, when the common paradigm was having the app directly connected to some sort of SQL database, which serves as a stable, static data source for the UI. Making glorified database editors is what it was really good at.
These days.. things changed. UIs need to be flexible, reactive, reusable, adaptable. UIs that can handle uncertain states, asynchronous data flows, change dynamically and so on. SwiftUI / React / Flutter all ended up at the same paradigm, it's a much more advanced way of doing things. Also, high level languages are much more pleasant to work with.