> I think what it disregards is the amount of effort that it takes to get to a situation where you have an interactive real-time IDE for the purposes of drawing a tree.
I agree with your view, but one of the reasons for this is that there is still a lot to ask from the GUI frameworks in most languages (especially languages like C++ and Rust). However, I still believe that this can change.
Raph Levien is driving some pretty targeted work on pushing the state of GUI frameworks for Rust [0].
In C++ Dear ImGui is heavily used by the game development community [1]. My experience is that it is really fast to get a visualization for most projects going in very little time using this framework. See the gallery threads [2] for examples. This project also gets better every month.
[0]: https://raphlinus.github.io/rust/druid/2020/09/28/rust-2021....