Killing creativity in PvP builds with a single, seemingly arbitrary decision

Can someone explain to me why only swords have block reduction nodes? With the prevalence of block in PvP, literally every other weapon type is completely unviable. This drastically decreases the number of "competitive" builds (because of node locations, skill requirements, etc.) for pretty much no reason.

Back in the day, did the ancient sword masters discover a way to bypass shields that the dagger/axe/mace/staff/claw-wielders were too stupid to figure out?

GGG is considering fixing this where all weapons can penetrate block iirc. Don't ask for source, I just remember hearing about this