Wow! If I had a nickel for every time a Trek show had a blind engineer, I'd have two nickels. Which isn't a lot, but it's weird that it happened twice. Right?
Transcription: A side by side picture of Star Trek Strange New Worlds character Hemmer and The Next Generation character Geordi La Forge.
'Hi we're Starfleet, and we recruit our captains from among the best and the brightest on 150 member worlds, spread over 8,000 light years! But the vast majority of the time, when it's not Jean-Luc Picard, we just get them from this one particular country that accounts for about 4% of the population of Earth. Weird, huh?'
Vulcans in Enterprise definitely did. All of the other member races maintain their own space force so it really is a human thing even if it’s not a human thing