Except that LyX is not a WYSIWYG environment, remember? LyX is a GUI environment that hides TeX/LaTeX macros and commands but it's not WYSIWYG. Remember that WYSIWYG means that what you see (on the screen) is what you get (on the printed page) which LyX most certainly does not do. Not bashing LyX, mind you, I use it myself and it's great.
The term Lyx uses for what it does is WYSIWM (What You See Is What You Mean) to describe the fact the GUI lets users manipulate the structure of the document.
