The engineers who are a class above the ones who rely on 'domain knowledge' aren't limited by the stack or the tools. They can switch to a different stack and the tools aren't so important to them.

For example I move faster on servers with ssh and tmux. I can do multiple things and configure stuff and test things really quickly with these tools.

A 10x engineer doesn't have patience learning about tmux and he doesn't need it.

In fact if you ever actually seen one of these guys (and they are rare) they actually tend to move slower with tooling. They just use the default terminal app on the Mac, they don't download iterm, tmux, neovim, vimplug or zsh to take their tooling to the next level.