Yeah, I feel like Geordi's blindness is meant to be a fairly unusual case of a person who has a handicap that isn't dealt with at birth and had to find a technological work around. Heck, even in Star Trek IV, Doctor McCoy is able to cure a kidney dialysis patient in like 20 minutes by giving her a pill from his medkit. Medical science in by the Next Gen is really just supposed to be THAT advanced that almost no one is handicapped anymore.

Technically, that's disability erasure, but it also is totally appropriate for a pro-science utopia 400 years in the future.

Anyway, considering the number of times that Geordi's VISOR technology was the key to saving the day (which I can probably count on one hand, but it's honestly amazing it happened more than once), everyone should be glad that he was born blind.