I used plan9's acme for a couple months recently, it really showed me how little you need from an editor to be productive. It has no config file, and few command-line launch options. This is nice, because it has relatively sane defaults and stops you from spending hours fucking around with your init.el or .vimrc files. It has some drawbacks though, not being able to turn on line numbers can be a nightmare when working through a stack trace.
The best thing about acme though is the command window where you can call unix commands (with options) really easily, which absolutely BTFOs dedicated editor packages.
There are some quirks with acme though such as common keyboard shortcuts not working, being unable to select text larger than your screen size with the mouse, and the aforementioned lack of line numbers. I alternate between vscodium and vim now, but acme really shows how less is more when it comes to text editors.