Comment by GuB-42

It is true that most part of software development happens in the mind, but sometimes, the mind needs a support. Some use a pen and paper, some use specialized software, but for many, the text editor is that support. That's where they throw their ideas, sometimes in code, sometimes as a comment, or in a scrap file.

Seen as a support it is important for the text editor to be as unobtrusive and responsive as possible, to not break the thread of thoughts. And slowness, even micro-stutters do that. Mastering the keyboard, which include knowing shortcuts, touch typing and generally typing fast also helps, so you think more about the problem and less about the keyboard when writing down your ideas.

Now, if the way you code looks like you are meditating in front of the screen, not typing anything but the final solution, and I am sure some people do, then you probably don't need to work fast in the editor. To each his own, but personally, speed is an important factor in choosing a text editor. That's why I am currently on Sublime Text and not VS Code. Even though the latter is similar but free, more popular, and with interesting features, Sublime Text is faster, and I like speed. And may take a look at Zed, now that it is available on Linux.