One, you can critique anything. But without qualifiers, or, better yet, suggestions for improvement, you come off as "salty". Criticism like yours reminds me of the scene from Mel Brooke's "History of the World, Part 1", involving the world's first artist...and the world's first art critic. I could be a bit more colorful as to what I mean, but here is not the appropriate place to do so.
Two, the episode is not perfect, especially in regards to the motivation for Kirk and company moving on. But the final act did allow for the writers to come up with a reason for the separation. And considering the fact that fan film productions, even this one, do not have the rigorous standards of script editing that PROFESSIONAL production have, I have no problem allowing for the problematic plot details. Why? At the end of the day, STC is NOT a professional production.
Three, honestly, an era has passed, so there will be no more STC, New Voyages or other robust fan films for us to bicker over anyway. Thus, I rather see the positives, and celebrate the past decade as something WE FANS were able to pull off, when CBS/Paramount weren't too concern about our beloved franchise. And, in a way, the final scene when Vic's Kirk stepped off the bridge for the final time seems appropriate in a way: there were always be STAR TREK, even if the fans will no longer be a part of it. But that's just me.
Peace.