Except that is only what an IDE does at the very minimum. An IDE loads plugins, provides intellisense, documentation, potentially loads documentation of all the

Except that is only what an IDE does at the very minimum. An IDE loads plugins, provides intellisense, documentation, potentially loads documentation of all the libraries, watches files, displays Git status, parses your code for syntax highlighting etc. etc. You're not opening a TXT file with 100K lines in it.