Funny that the majority of those crying "muh setting" roleplay nonhumans or spellcasters who have access to the absurd powers of magitech.
Whose setting exactly is at stake here? Which playerbase and race were the first to advocate for firearm lore? The human playerbase of Oren.
Your rp is just as insular as ours. Most humans spend their time with other humans, elves with elves, dwarves with dwarves, etc. How many human rpers did you see criticizing or proposing retcons to magitech lore because it our violated our "theme?" Why are you so anal about what our roleplay could look like?
The fantasy genre is as expansive and varied as the name implies, the invisible marked boundaries that you lot refer to don't exist anywhere within film, games, or literature. Our interpretation of fantasy is just as valid as yours.