I've been using aquamacs for some time now, and I think I'll be switching to plain old emacs because of this page. Is this really just a vanilla build of emacs

I've been using aquamacs for some time now, and I think I'll be switching to plain old emacs because of this page. Is this really just a vanilla build of emacs with no customization? It seems to be much more well-behaved than the last time I tried out the regular emacs (which I think was version 22).