For comparison, I just opened up an org-mode file in Aquamacs (Emacs with macOS native GUI) and it weighs in at 105MB, which is actually lower than I would have guessed.
Just to add to that, I don't think anyone should be concerned about their text editor taking 200 MB anymore. I doubt it is worth worrying about.
(I use PhpStorm and Visual Studio Pro and Rider as my main foreground apps. If Jetbrains products used a mere 200 MiB, I would be worried that something had broken and reset them or reinstall them. But they're not text editors.)