Comment by rdtsc

> if I could sense electromagnetic fields, but no one would describe me as disabled for not being able to sense these fields—unless, perhaps, everyone else could.

Light is EM fields. A possible scenario is a battle at night with others having night vision equipment and you don’t. You can absolutely be described as disabled or being at a significant disadvantage.

Because, like you say, what we consider normal in that scenario is to have a proper night vision equipment.