the fewer operating systems and environments there are, the lower the incentive to make portability a feature.
GT works on all desktop OSes (and on Android). It works with Git for all sources. It can interoperate with the file system. It works with other runtimes like JS or Python. It works with the debugger adapter protocol to help accommodate other runtimes. It works with language servers, too. It even interoperates with an embedded webbrowser (through WebView on Mac and Windows) both ways.
That's not quite a lack of interoperability, or?
The fact that GT is as interoperable and portable as you describe, yet it still receives such comments shows how short-sighted many people in technology are, or have become.
We are in violent agreement :-). I have watched your demos at UKSTUG and my jaw has been on the floor -- very impressive.
I am glad you found the demos interesting. I’d be interested what made them attractive from your point of view.
You have now given me enough reason to binge watch all at https://www.youtube.com/@gtoolkit :-)