> Vim lists `:q' and `:help' prominently in the middle of the screen when you first start it.
Only when you start it by itself intentionally, not when you want to edit something and your $EDITOR is not set, then you end up in vim without an idea, how to quit.
I remember (in the mid-90s) making another telnet session and killing vi. Swearing in the process. Yes, I later learned the :q! command.
Vim lists `:q' and `:help' prominently in the middle of the screen when you first start it. If you try to exit with C-c (in Normal mode), or C-c C-c (in Insert), you get this message:
"Type :quit<Enter> to exit Vim"