Time traveling Romulas account for changes like moving the Eugenics Wars from the 1990’s to several decades later in the 21st century. It could also move the date to Gorn first contact earlier in the timeline. Time traveling Romulans = Superboy hitting the walls of reality to change things in Dc Comics’ timeline.
Could someone refresh my memory? When La’an went back in time to the 21st century and met boy Khan, did she act like this was anything out of the ordinary? Did she say, “WTF? Why is Khan a little boy in the 21st century when he should be an adult who left Earth in 1996 on board a sleeper ship?”
(If TPTB are willing to say "Yes, we're changing things from TOS" then I am happy to meet them half way.)
That’s just it. They’re not willing to say that. They want to say that it all fits together when it very clearly doesn’t.