I haven't thought about using my sidebar/file explorer to the right in [[Neovim]] (or in any other [[IDE]] I've ever used for that matter). After reading through the answers in this Twitter question I found it interesting that with the sidebar to the right, the code won't shift when toggling it. I think a lot of people keep the file explorer open while developing and don't experience this, but I always close it when I don't use it. I'm going to try using the sidebar to the right for a while and see if it sticks.
I'm using [[NERDTree]] as my file explorer and the setting to display the sidebar to the right is
let g:NERDTreeWinPos = "right"