Their Vim-specific recommendations are woefully out of date.
e.g. the package management. vim-plug seems fine, it seems odd to me to mention the others. (Pathogen's readme now mentions that it recommends vim's built-in package management. Vundle and neoplug haven't had a commit in years).
In terms of vim distributions, https://github.com/SpaceVim/SpaceVim probably deserves a mention, as inspired by the popular Spacemacs.
It'd probably be worth mentioning NeoVim.