Aside from blindness being a spectrum, the "Blinded" condition assumes the character hasn't learned to adapt to their condition. Most blind people, even completely blind, get around just fine, and while their senses aren't heightened, they've learned to rely on them more, so when I'm in the dark, yeah, I'm pretty useless and flailing all over at every sound and tripping on everything, because sight is my primary sense. I rely on it over everything else.
But if I have little or no sight, I'd have to depend on hearing to determine the size of a room, the proximity of walls, the approach of anything, etc. I'm going to feel air movement and pressure changes more readily, because I'm used to paying attention to that.
5e conditions are sudden and temporary. If you read the RAW, they give a sense of ending at some point. They were never designed for permanent experiences that people adapt to over time.
Then you'll be interested in the TTRPG
Survival of the Able.