Kinda strange. Emacs is so inherently keyboard-focused that I fail to see the point of this... nor the need for it?!
Why not? Some things make a lot of sense, like the context menu. The current right-click behavior just sets the text selection mark. This doesn't make much sense anymore: every other editor uses click and drag to select text using the mouse. This frees the right mouse button, and a context menu makes lots of sense. Emacs is a highly complex software, which is then customized with lots of modes. Making functions acces…
Simple interfaces are especially useful for newcomers, I agree to that point as well. At the same time, most power-users of Emacs do not use the mouse at all. While not everyone aspires (or even should aspire) to become an Emacs power user, the question might be asked at what point it would be wise to switch from mouse-based use to keyboard-based use as you progress? Does it even make sense to first learn an interface you're better off ditching at some point as your expertise raises?