So, Spock didn’t tell Kirk or Bones about Sybok but he told Chapel because he felt guilty about kissing her? He also didn’t tell Kirk or Bones that Sarek was his father but it was common knowledge when Pike was in command. Some funky little retconning here.
I dunno, I think it's plausible that Spock might decide to be much more tight-lipped about his personal life as he gets older, particularly if something happens over the course of SNW that he perceives (rightly or wrongly) as happening because he was too open.
Edited to add: SNW's version of Mister Spock is more openly emotional than TOS's version, but it strikes me that this is broadly consistent with "The Cage," which established a young Spock who was more emotional than he was in TOS. I think Spock's journey in SNW will involve him becoming less accepting of his Human heritage and more embracing of his Vulcan heritage before TOS starts and reverses that process, with Spock finally reaching an equilibrium of sorts between his Vulcan and Human heritages after mind-melding with V'Ger in TMP. End edit.
I dunno, putting such a focus on Spock and T’Pring thru the whole season seems like a weird thread to pull from TOS considering it won’t be resolved “in-universe” for another 6-7 years.
I mean, I think it's pretty clear that one way or the other, the Spock/T'Pring arc will end with them being alienated from one-another but being stuck, for one reason or another, with a betrothal neither ones but which both hope they can avoid consummating if Spock does not experience pon farr. It will be a de facto breakup and the events of "Amok Time" will become a coda to the arc. Hard to see where else the arc can end since the status quo at the start of "Amok Time" was Spock hoping he would never have to marry her and T'Pring literally deciding she'd rather Spock die than marry him.