Can you do so about the 2014 rogue?
In fact, ranged weapons are now also monk weapons in the new UA.
Sneak attack? It does literally say it only works with finesse weapons and RANGED weapons. Kind of a big neon sign that you should use ranged weapons when your level 1 iconic feature specifically calls them out.
But y'know what? It doesn't matter. If you're so averse to the class fantasy of a monk having a ranged weapon because of your idea that "he has unarmed strikes therefore he must always fight with melee weapon", then at least we can agree that the monk would use and throw their spears, handaxes, and daggers.
It isn't that he "has" unarmed strikes. Seriously, did you read the monk? Let us review it.
Level 1: (1) Martial arts allows you to use unarmed strikes with dexterity. (2) Martial Arts gives you a bonus action unarmed strike whenever you attack. (3) Martial Arts increase the damage die of your unarmed strikes.
Level 2: (4) Flurry of Blows gives you more unarmed strikes
Level 3: (5) Warrior of the Elements allows you to change the damage of your unarmed strikes. (6) Warrior of the Elements allows you to push a creature with your unarmed strikes if they deal one of the damage types. (7) Warrior of the Elements increases the Range of your unarmed strikes. (8-10) The Open Hand Warrior gives you three new effects that can only be activated by using Flurry of Blows and hitting with an unarmed strike. (11) Way of Mercy allows you to swap an unarmed strike from Flurry of Blows for a use of Healing Hand. (12) Way of Mercy allows you to deal extra damage with your unarmed strikes
Level 5: (13) Stunning Strike only works for simple weapons or unarmed strikes
Level 6: (14) Empowered Strikes only works with Unarmed strikes. (15-16) Way of Mercy empowers both the healing hand and the Hand of Harm, which use unarmed strikes.
Level 11: (17) Shadow Warrior improves their teleport to allow a free unarmed strike when used. (18-19) Way of Mercy once more empowers Healing Hand and Hand of Harm when used with Flurry of Blows to make unarmed strikes.
Level 17: (20) Shadow Warrior allows you to use flurry of blows to make unarmed strikes for free. (21) Elemental Warrior increases the Strength of your unarmed strikes. (22) Warrior of the Open Hand's Quivering Palm only works with Unarmed strikes
So yes, SOMEHOW I got the impression that Unarmed strikes were in some small way important to the identity of the monk. It could have been the 22 abilities that call it out over the course of all of their subclasses and early class features. The only one that DOESN'T seem to explicitly call out the unarmed strikes early is the Shadow Monk, who instead just calls out melee attacks at level 6.
Yes, they are CAPABLE of using a ranged weapon. But they were not DESIGNED as a ranged warrior. That isn't what all of this should tell you. It should tell you that Monks want to use unarmed strikes.