So, what folks are saying is, because a date was indeed mentioned at some point in a story in the past, in a context that was simply "you're really old now!" and decidedly NOT "you were a lot older than Kirk was, weren't you?" folks are screaming that continuity has been violated?
So a few days ago you were satisfied to agree to disagree, so I hope I'm not one of your screaming folks.
Let me try again. Has there ever been an episode of any episode of Star Trek where Scotty being older than Kirk mattered to the plot in any way?
Whelp, the goal posts moved. You wanted onscreen canon, but that didn't agree with you, so now you need a story ABOUT Scotty being older. *shrugs. The line in Relics was not just a random throwaway line. It was an onscreen verification that Scotty was the same age as James Doohan in the original series. And if you skipped what I wrote earlier, Relics also has Scotty saying how many ships he served on. A bunch of freighters before Starfleet ships, a career culminating in become chief engineer of a Constitution-class ship. It is actually a story about how old Scotty is.
Or you can watch the opening of the Motion Picture where Scotty takes Admiral Kirk to the refit Enterprise and they've died Kirk's hair a new dark brown color to keep his character from being old, but they've let Scotty's hair go gray. It just caps off the whole run of the original series where Kirk is a precocious young captain and Scotty is a seasoned, experienced hand.
I feel like we need to remind folks that this is FICTION, and that lots of dates and references have had to be retconned in the past. Usually, we can wink at it at move on. Why not now?
The producers didn't create a canon because they wanted to. They were perfectly happy running spec scripts on TOS. Fans wanted canon and eventually producer's cooperated. A lot of fans want to be grounded in a consistent canon. Yes, it has been broken in probably every series, but always for a reason and fans get to decide if they like the reasons. I've winked at plenty of retcons. DS9 did quite a few of them right out of the gate and I love that show. And I haven't stopped watching this show either. If I were in charge the Enterprise would look as much as possible like TOS, but I forgave them because I really like how it looks and it really looks halfway between NX-01 and NCC-1701-A.
It made me uncomfortable how many TOS characters SNW was starting with when they first announced it. Pike and Spock were indispensable and Discovery had already established Una. It would have made the most sense to put either Boyce or Piper in sickbay. I think they chose M'Benga for diversity. I'm not a DEI detractor, but I would have just made a new character rather put M'Benga where he doesn't really make sense. He will somehow get demoted to a staff doctor that you usually don't see. But I've winked at it. They've made an interesting character of him. If *I* had been in charge I would have left it at that and made all new characters, but if the studio had insisted on bringing in another legacy character, I would have put Scotty in at the start, because he's the one that makes the most sense. He's older than the rest of the crew, we didn't see the engineer on "The Cage" and he was the engineer on the second pilot, so he doesn't conflict with anything. Actually, I think I would have done this without the studio asking me. Hemmer was cool because he kind of grounded TOS deeper into the later-established canon. Ortegas is fun and they can do anything they want with her. Bringing Sam Kirk in was a fun idea, but was only fun while it was a wink at James Kirk. Now that James Kirk is there all the time, we don't see Sam. A couple weeks ago, Sam is actually the one just getting named for free without hiring an actor. It was supposed to be the other way around. La'an would be cooler if they hadn't felt like they had to tie her in with her last name. I just would've liked to have more original characters that don't need to be kept on track.
But I winked at it. The new Pike, Spock, Kirk, and Uhura are not clones of the TOS, but they feel to me to be reasonably within the same cloud. They've done a fun thing with Majel's characters, neither of which had personalities before. They split Majel in half and made two characters that don't look the same and have their own interesting personalities. I'm cool with it. But now they have Kirk on all the time and they've brought Scotty aboard and the show has virtually been transformed into TOS season 0. We're only missing Bones, Sulu, and Rand now.
But to my eye Scotty doesn't resemble Scotty and I don't feel like they improved him with their changes. He is irritating. He treads the exact same story spots as Uhura. The new character has his name, his hair color, his uniform, and a Scottish accent (A REAL one this time), but he's a totally different guy. I'm not really sure it is Montgomery Scott. It might actually be Carson Beckett. I think he might actually be more like Carson Beckett. What do the two Scottys have in common? In my head Scotty would've been the one that went into the other room to tell acting Captain Kirk that he's been around the block a few times and been in some tough scrapes and he knows he can do his job, but those kids out there need someone to show some confidence and give the orders and if Kirk wants to be a Captain now is the time. But they couldn't do that with the young punk Scotty that has been rolling his eyes at him.