One of the things the SNW people have done right is to lean into Spock/Christina, expanding their backstory and turning the unreciprocated crush established by a throwaway line in "The Naked Time" into a mutual three-dimensional romance. What you observe is part of the leaning into it, I think.
To me it's more of taking what we saw in TOS out of context just to justify the story they want to tell, but hey, however you choose to interpret things is your bag, baby.
Why in the world would they want to do that, when so far they have wonderful actors playing beautifully realized versions of the TOS characters?
I personally would not use 'beautifully realized versions' as a descriptor of these characters (although I will agree that the actors are wonderful), but again, that's just my opinion.