I am confused

Your answers could all be plausible, and thank you for checking this topic. Honestly, yesterday I have thought more about it and the only thing I could come up with is that the whole thing is just an error, made by the storyline writers, since Apex is not Titanfall 3, they didn't really mind putting the characters (except for Kuben Blisk, who aged normally) into a world that  is chronologically after the Titanfall 2 war.