IDE's format and display text. Outside of compiling, they should respond instantly on a blight-ridden potato, with resources to spare.
It's not surprising to hear few true text editors because a text editor is more or less a solved problem. Notepad++ is 20 years old and still functions fine for those who want a pure text editor. Anyone making a modern text editor is either doing it to learn or to build up into an IDE later.
IDE's format and display text
This is only a small part of what IDEs are doing. Also, even just formatting and displaying text is hella difficult. How many years was Zed in development until 1.0?Do you never use language server features? Showing git blame on files? Doing regex search and replace? Doing multi-cursor editing? Run test?
If you genuinely never do, then that's ok, you don't need an IDE.