It's not a matter of scale, it's a matter of being completely artificial and obviously tailored toward gamey purposes.
No, it doesn't make any shred of sense, and that's the first big problem, it's blatantly handmade, and doesn't feel at all natural. It's dungeon's corridors instead of open space FFS.
Absolutely not either, and that's the second problem. As it's been said several times, if everything is a chokepoints then chokepoints lose all meaning, purpose and worth. Being walled in constantly is boring, not interesting, and the entire world being a bunch of narrow paths makes it repetitive and annoying to travel, not fun nor immersive.