IMO learning Vim today is absolutely worth it. Vim is a sort of "lowest common denominator" thing in text editing, it works great for SSHing into remote machine

IMO learning Vim today is absolutely worth it. Vim is a sort of "lowest common denominator" thing in text editing, it works great for SSHing into remote machines, `docker exec` into containers, and making changes when sitting next to a coworker who uses an insufferable (or badly configured) GUI editor. As for the second question, differences between regular vim and neovim largely don't matter for learning vim, as the bulk of the changes is behind the scenes. Some plugins will depend on a specific vim version, but your muscle memory probably won't.