koprophagoi asked: In the PoE world, why is it still common to find plate armour and shields in what's a (more or less) early modern level of technology in terms of firearms? Did the advent of gunpowder warfare and specialized units like pikemen just pass the Dyrwood by?
Mostly because it was still common to find plate armor and (to a lesser extent) shields in use through the early modern period of Europe. The Dyrwood is at roughly the 16th century of technology. Plate armor was reaching its peak of development in the 16th century (generally considered to be Maximilian) and continued to be used through the 17th century. It’s a misconception that someone in Europe fired a gun in 1501 and everyone went, “Wow, okay, throw all of this armor out the window.”
There are also some obvious, practical differences between “adventurer” combat in C/RPGs and warfare. Pike and shot formations (like the Tercio) work based on the number of combatants. Guns were’t that awesome for small-scale combat in the 16th century. There was no rifling, they were incredibly slow to load, and they weren’t particularly reliable. This isn’t a big issue when you have 30 guys shooting
en masse with 30 pikes protecting them.
In terms of realism, there are many more questions to ask about medieval/renaissance arms and armor in use against tremendously strong creatures, flying creatures, creatures that can breathe fire or shoot lightning, etc. There was an old Dragon magazine from the late 80s/early 90s that specifically tried to address castles in D&D, structures that would be almost pointless in a world with flying, invisibility,
transmute rock to mud, and similar nastiness.
Eora as a setting and PoE as a system are Forgotten Realms-like and D&D-like, so we largely use the conventions of that setting and system, respectively, acknowledging that certain aspects of them would be impractical in a strictly realistic sense.