True but then she was arrested straight after so it did partially come to fruition. Plus as has been discussed lots of things could have made Kirk react in such a way. And I do admit they can freely do whatever with La'an and ignore it as a timeline change too.In the season 1 finale, which was also in an "incorrect" timeline, they went out of their way to imply that Una was still in prison for lying about being genetically engineered and that was a clear misdirection.
And they have also said that they had to make several changes to the script after they found out they were getting a fifth season in order to not spoil what they had planned.
Lots of possibilities for next year.

