This is true. There is a reason why Scaleform made its way to become a popular gaming UI framework even though many of its weakness. The most important focus in game UI framework should be on tools and pipelines for artists/designers and this is usually not up to engineering decisions. I won't say that using ImGUI for game is impossible, but there might be lots of tooling works ahead for production game development.

Nuklear is sometimes used. Anyhow, I do know of some game engines created and used by a (very large) game studio that uses ImGUI. I won't say anything else though :)

Because adding a text is just a imgui::text("abc") function call. And a button is just an if(imgui::button("click me")) do_something() statement. There is no other language involved, no markup, no gui editor. Just direct code and highly hackable to make this extend to unexpected lengths.

To add to this, I find it easier to have a simple while loop that renders the screen, fetching variable data on-the-fly, etc. It is rather pleasing to the eye to understand the layout with IM interfaces, etc.

Comparing this to (something like) WPF, you create XAML files, with either or combination of ViewModels and back-end code to "bind" and can get complicated quickly. I guess the only exception to this is if you have commited to WPF non-stop for many months. However, with IM interfaces, its easy to get going (imo)

Excellent reply. I did not consider international keyboards when I writing my reply. And gaming companies are definitely targeting international markets in 2024!