Was the original question about what's valid/invalid with respect to canon, or what we like/dislike in what was made canon? I was interpreting the OP's question as the latter. Since we are all entitled to our personal likes/dislikes, is it not nitpicking to call out someone's personal likes/dislikes as being nitpicking?
Regarding the above-mentioned point, my meaning was that, if the timeline was split on the day of Kirk's birth, then I might have had his mother in Iowa on the morning of that day, prior to the split. That is, if I were the writer. Which I wasn't. And I accept that.
And that's my response to the question that was asked. What's yours?
My point is that the Narada altered the timeline. Not just significant events, but minor ones as well. its effects would ripple throughout time.
Gary Seven performs his mission in the late 1960s on his own without the presence of Kirk, since Kirk doesn't time travel to the past.
Chronowerx Corporation persist without interruption from Janeway et al. OTHO, maybe there’s no Chronowerx Corporation at all if the 29th century is altered.
Sisko et al. don’t visit 2024 Earth, so no need for Sisko to take the place of Bell and alter his look when he returns (and no coincidental observation of similar looks from Nog). Sisko possibly doesn’t meet Kirk either because of these changes, since Kirk's future has been altered..
Picard et al, as well as the Borg, never travel back to 2063, leaving Cochrane and Lily to perform their flight. There’s also no Ent-E orbiting Earth to draw inspiration from for the NX-01. Who knows if this version of Picard's crew meets Spock, Bones, & Scotty.
At some point, these divergences will affect the ENT crew. No Borg already means “Regeneration” doesn’t happen, and neither does Cochrane’s tale he told at Princeton. And Edison was mentioned to have served in Xindi and Romulans wars. The Xindi crisis isn’t seen as a war in the Prime timeline, so that’s another possible change. Archer seemingly alive in the 2250s at the age of 146 is another change. Archer even being called Admiral instead of President is a change. He might have hated the job of being Federation President and wanted to be referred to as Admiral, but its also possible he lost and never became Federation President. Or never sought the position to begin with.
Robert April never becomes the first captain of the Enterprise, since the Enterprise maiden voyage is a decade later in the Kelvin timeline. April’s a fugitive in the comics instead.
And Enterprise being launched a decade later means no Vina, Uno, Boyce, visit to Talos IV, etc.
Who knows how this has affected the Kelvin versions of the Shenzhou and Discovery.
Eventually we get to Kirk and friends, where Kirk is born in space instead of Iowa, Chekov is 17 instead of 12, Uhura is romantically involved with Spock, the crew meet Romulans 10 years ahead of schedule (and Pike meets them at all), meet Khan 10 years ahead of schedule (and Pike meets an early death), etc.
The Narada changed EVERYTHING.