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.
Geordi started as the blind navigator, for irony. They moved him to engineering in season 2 when they decided the did need a chief engineer as a regular character, and Wesley could serve as helmsman.
I don't know if Geordi would describe vision with his VISOR as "better", just that it allows him to see more of the E.M. spectrum. The few times he gets to see with natural eyes (when Riker's Q powers restored his eyes, and when the magic immortality planet "healed" him) he describes seeing beauty that he normally isn't capable of experiencing. "Better" is always subjective
'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?'
Nope. He isn't. LtCmdr Paul Stamets isn't an Engineer and he never has been. He's a Science Officer. He works in Engineering Test Bay Alpha but he isn't an Engineer himself. Jett Reno is the highest ranking Engineering Officer we ever see on Discovery.
In Season 2, Reno goes into Stamets lab and says "The Chief sent me here" so we know there's a Chief Engineer and it isn't Stamets.
That link doesn't have any information about Stamets after Season 1. I think they're using 'chief engineer' to mean the 'main engineer we see' but that's not even accurate. Then again, Memory Alpha calls the Chief Medical Officer the 'head nurse' so fuck knows what's going on.
He was just a mycology engineer, not the chief engineer. I honestly can't remember if we ever see main engineering on Discovery. They mostly work in the Spore Drive engine room. But that was Discovery's schtick, that it wasn't the "main" crew that were the stars originally.
If they were smart, they’d bring back Hemmer in the first episode of season three. Having him on one of the Gorn ships would be a perfect entryway for the storyline.