Maybe, but there's no reason to use an ASCII-only text editor. (Almost) all modern text editors use UTF-8. And UTF-8 stores all the characters in the 7 bit ASCI

Maybe, but there's no reason to use an ASCII-only text editor. (Almost) all modern text editors use UTF-8. And UTF-8 stores all the characters in the 7 bit ASCII table the same way ASCII does. The result of that is, so long as you don't add any emoji or anything to your documents, a 2022 version of VS Code will store your text files in the same format as vi did in 1976.