"I'm in no way saying that Geordi wasn't a highly intelligent engineer. "
That doesn't resolve with ""but he's useless without it"
There is no other way to take that strong of a statement.
You were either wrong and completely misspoke and wont' admit it. Or you did think that and are trying to weasel out of those words after being shown they were wrong.
Given the shows history with Scotty, it would have been completely fine with or without him having the visor.
He was not in any way useless without it. "I've just never seen Geordi lose the function from his visor and him not react just as if every single one of us would react."
What you haven't seen isn't the truth. Most of the episodes had him solving problems without any assistance from it. Just his engineering skill. And there are at least two episodes he was without its function and still functioned as a great engineer. So your claim here falls apart also.
So your statement fails. Admit you were wrong in saying it and save face. The wriggling is unbecoming. I know it is hard to admit you are wrong. But in the end when you are wrong, it is far better to do so.
But again it is set far in the future where a lot disabilities would have cures or solutions.
In Generations they had replacement technology for Geordi's eyes, Picard's heart. That they didn't have technology for limbs, for genetic treatment in birth development, is not a far off conclusion to come to.
Does that mean all? No. But probably to a point wear only the most debilitating were left.
But even with technology that could given them the ability to work and contribute. Given the dangerous missions they undertook, and that it was still a military vessel even if for exploration, they had to consider that with the crew.
Can this member evacuate on their own without any powered systems and without relying on others and putting them in jeopardy? If you had to help someone else could you if you had extreme limited function to your limbs other than your example of pushing some buttons? Have you considered any of that at all?
That doesn't mean they aren't working in civilian fields. That is where the federations inclusiveness in Generations applies. There was always exceptions for starfleet. You would have to be able to perform a lot of functions. Just because Star Fleet Regs don't allow some because of those concerns does not mean Federation inclusiveness is void.
And again I am in no way arguing they should eliminate all people with disabilities from the shows. I'd love to see a great character that had one. A replaced limb perhaps. Or even a civilian scientist they meet.
And another though would be tackling this issues as a dilemma for the show would be another great idea.
But your two statements now on Geordi are completely off base.