What is it about OoT that triggers the autists on this board so hard? Is it because they're still upset about the 2D Zeldas getting cucked?
Anyway, I agree OP. I had never really thought about it, but you're right, the world design is pretty similar. Dark Souls is a little less linear for the most part, but the way you explore the world and uncover secret paths that link areas together is very much the same.
Personally I think Dark Souls is just a harder Zelda with added RPG elements and nothing to do outside of combat. That's my main criticism and why I think Zelda is the better game -- doing sidequests, looking for secrets, puzzles, etc. Much more to do and a lot more gameplay variety, even if it is piss easy.