I do not think that a one-man company of a small weapons smith can crank out 100 swords in a month. To actually make a sword, you need to forge the pieces rough, then fine, then grind and file them, polish them, assemble them etc. etc.
In a month of roughly 30 days, there are about 20 workdays, and I HIGHLY doubt you can make 5 swords per day.
I had a wheellock pistol handmade by a polish master craftsman, and it took him almost a month to make the lock, and the whole pistol took him more than 2 months.
Old fashioned crafts are time consuming. Also, I doubt the small smithy could afford to lose potential customers, by working exclusively for Warhorse Studios for months on end. I assume, they are making a few swords for KCD, then a few for other customers, then a few more KCD ones etc. etc.
Also, I always understood any of the backer rewards to come along with the game....when the game is finally done. And I for one would prefer Warhorse to take the time they need to ship the best possible game, rather than rushing it.
PS: I only regret not going high enough of a tier to get a sword. Wonder if one could upgrade, still?