

The contributor’s frustration with Linus started with Linus ignoring multiple explicit requests for his intervention. When the contributor was so frustrated at the lack of response from Linus that he had the audacity to talk about it off list (linking here because the original toot has been deleted), it was at that point that Linus finally chimed in to tell the contributor “Maybe the problem is you,” implying that Hellwig’s obstructionism was not a problem in his eyes and that the only issue was the contributor drawing public attention to it.
Vim has its own plugin system that can provide all of the things on your list. Most people used to use a plugin manager like vim-plug or pathogen, but plugins can also be installed manually.
With vim 8 there is built in plugin management. Just open the editor and type
:help packages
Plugins (including the plugin managers which are plugins themselves) get installed in your user’s home directory, so you can install them yourself without affecting other users or involving the sysadmins who are giving you pushback on installing other applications system-wide.