His point wasn't that Emacs has fewer features, his point was that many of those features are half-baked compared to the implementation provided by Sublime.
You give up a bit of flexibility for more stability and overall polish.
That's almost true; surely the flexibility makes the system a little less "solid" in appearance. Just like a bare unix shell looks like frail compared to a full fledged GUI application. But for those who likes depth, it's not fragile or half baked, it's decoupled.
You give up a bit of flexibility for more stability and overall polish.
That seems like a fair point.