Eh, half of this list actually IS possible with Vim, either through a plugin or simply out-of-the-box keyboard shortcuts. The other half are features that separate IDE's from text editors in general.

I do agree that I'm infinitely more productive in an IDE than I ever would be with any plain text editor (e.g. autocomplete-hints, refactoring support, etc etc). After discovering the JetBrains suite of IDE's some years ago, I can't imagine using anything else for application development.

However, the point of vi/Vim is not so much the editor application itself... but rather its keybindings and modal editing approach in the abstract. Those concepts are decoupled from the actual editor, because every major IDE has plugins which make them available in its environment as well. The "IdeaVim" plugin for JetBrains IDE's is amazing, letting you mix-and-match between Vim commands and normal JetBrains shortcuts in a very intuitive way (or at least intuitive if you're familiar with Vim).

If you're happy with your current working environment, then rock on. But if you're fluent with vi/Vim (and it is a significant learning curve), then you can absolutely have the best of both worlds. To me, arguing about whether to use an IDE or an editor is pretty silly. But the question of whether or not to use modal editing and a suite of standard shortcut commands within an IDE is a much more interesting matter.