I am once again pushing back on the notion that this is “medieval” fantasy. The only thing medieval about the Forgotten Realms is its aesthetic. There are diverse levels of technology, different social values, and economic dynamics which are completely foreign to a medieval setting. Medieval societies did not have rail, teleportation, flight, electricity, the printing press, or mass literacy. It is entirely normal for refugees from the army of the Absolute and from Elturel being transported to and from Avernus to flood into Baldur’s Gate and be overwhelmingly decent people because they are civilians. To say otherwise contradicts the lore of the Realms.
Also Wormerine is right: Larian is very much not American. To imagine these issues as allegories for American politics is projection.