You have confused the inability (and frankly unwillingness) in the Vim community to add new features as the virtue of simplicity, while in fact, its the tail wagging the dog. Vim's source is an abomination of global variables, copy paste, and decades of hill climbing. Vim still maintains support for e.g. Amiga and probably a dozen different language bindings. It is Vim's byzantine implementation and not some philosophical purity that guides its development (or really lack thereof). There is nothing simple about it. This mess is NeoVim's raison d'etre.
