As a vim user, I emphatically disagree. It seems to support most vim commands, but the ones it doesn't support of course become the most frustrating. As an example, I cannot use <space> for movement/direction because it consistently pops up some stupid menu, even in the middle if entering a command.

As a vim user, I'm also used to my editor starting up instantly. Spacemacs takes so long to load that it's laughable. And since GNU emacs is single-threaded, the whole UI is completely locked while it processes the massive amount of configuration needed to make spacemacs what it is. The only thing "better" about that is that it gives you an opportunity to take a coffee break. I'm reminded of the "code's compiling" XKCD: boss says, "hey! quit horsing around!", worker says "spacemacs is loading!" And this is with 8GB of RAM, 8 processor cores clocked at 3.2 GHz, and filesystem on an SSD drive.

And then you run into problems with many packages from MELPA. If some third-party package introduces its own keybindings, then you still wind up with odd emacs-style keybindings here and there, rather than Vim-style ones. Furthermore, Vim's leader key is backslash, not space, regardless of how you like to configure it.

So, what's "better" about it? The fact that it's got a "pretty" powerline statusline by default? The fact that it uses some dark colorscheme by default? That's not enough for me to abandon vim.