The author sees the fact that emacs UIs are textual as a negative, but it's the reason I love it, the reason I've been using it for 20 years and I dare say the reason some have been using it twice as long. Ditching terminal support and replacing emacs TUIs with GUIs would not be progress, and if that's what you want I doubt modifying emacs is going to be a rewarding way of trying to achieve it. Just use vscode.