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A: Don't worry, you don't have to use vim unless you really want to! Since we use a shared folder, both the box and your computer can access its contents. As long as you keep your code in there like in the instructions, you're able to access that folder from your computer and use whatever text editor / code editor / IDE you want.
Q: I upgraded to Big Sur after installing, and it doesn't work! Does this not work for Big Sur? (Likely applies to future MacOS updates, Big Sur is currently the latest as of writing this)
A: It works for Big Sur! Upgrading operating systems for Mac doesn't seem to transfer the permissions for VirtualBox properly, so you may need to re-install VirtualBox in order to gain the prompt to come up in System Preferences > Security & Privacy. Once installed, you will need to click "Allow" to give Oracle Virtual Box the proper permissions. Note: to uninstall VirtualBox and Vagrant, just download the latest version (see the links at the top of the page), and it should come with an uninstall tool.