They are relatively useless for slicing yes. But try blocking one, it's incredibly difficult. If you block the rod, the blade still stabs you, and blocking the point of the blade would be one in a million. Dodging is still possible, but a scythe has a rather large range. Honestly, if you have a spear or something you are fine, but if someone is good with a scythe and you have a short sword you are totally fucked.