As stated, I disagree (and this is coming from a person who lived inside emacs-as-window-system for most of a year). It might come from seeing dozens (maybe hundreds) of smart people decide that “Quit Emacs” was the best way to accomplish what I would do with "C-x 1”, and that was before tabs.
I think that *help* and *completions* can teach beginners about split windows just fine, and from there they can learn about split-window-{below,right}, winner/windmove, pop-up-windows, frames, and tabs as fits their preferences.
All that’s IMHO, of course.
~Chad