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Had this conversation with someone who chose to no longer be at my table after meeting a blind NPC
(files.catbox.moe)
Another player who was at the table during the incident sent me this meme after the problem player in question (they had a history) left the group chat.
Felt like sharing it here because I'm sure more people should keep this kind of thing in mind.
That's one of my favorite things about Dnd. "The World" is the DM's interpretation of a world or their own world. Even if they were running an otherwise stock Forgotten Realms setting they can add as much steampunk or magipunk elements as they please, including superpowered wheelchairs for adventurers. In your world there would probably be something different than wheelchairs if there's anything because it really just comes down to preference.