To install all this binding(if you have already installed fzf), you need to run
`$(brew --prefix)/opt/fzf/install`.
Also, discover the possibility to choose several files and open them simultaneously in fzf.vim. To do it, just press `tab` to mark files to open.
More details on the issue.
Btw this guy has a cool vim plugin for git merging, also his YouTube channel and Dotfiles.
I did not find his Twitter profile, and please share if you have it)