I understand how they are built, and what the mechanics reflect. I also understand that by doing so, they cut off not only a whole bunch of RW martial arts styles, but also lots of wushu, over-the-top martial arts archetypes as well.
Just consider The Flying Guillotine. The
entire point of every major antagonist in every movie centered around that weapon is that the BBEG can use his martial arts prowess to take down foes many yards away from them...and, as is revealed in the movies, none of them is a slouch at close-quarters/unarmed combat either. Another martial arts flick I saw recently (but cannot name, since the cable company's guide mis-labeled it as The Breakfast Club

), the protagonist had to fight 8 evil blind monks...each of whom had mastered a particular weapon while maintaining possession of an iron vessel of some kind. Each monk's fighting style was strongly influenced by his weapon...but even weaponless, each monk was a formidable combatant.
Sometimes, even in the out-there world of martial arts fantasy, the weapons help define the character.
My position is that the 4Ed monk cuts all that off, and because of that, I won't play the class. Ever.
And my contention is that I may not be alone in that sentiment, so DMs looking to HR something based on the Monk's character design should be aware that this design is not universally praised. IOW, they should proceed with caution.