That was a very interesting episode, this and the previous episode have been the standouts of the season. I've felt that while this show has tried to do "unique" episodes, this is the first one that really felt like it was pushing a boundary. Examining Starfleet's role in the Federation is a very interesting idea, you could easily see this being a documentary about the Navy or something similar. I think it really elevated what this episode would've been if it was just the vanilla alien weapon plot. I do wonder how this documentary would've been received inside the fictional world. I'm not sure Starfleet comes out looking particularly good for having signed up to this biological weapon in the first place, plus the documentarian asking a bunch of war vets about what killing people felt like seems a bit irrelevant.
I think I only have two nitpicks regarding this episode. The first is that if that guy put a floating camera 6 inches from my head I'd snap at him too. It lent itself to some unique cinematography, but I'm not sure it was actually good cinematography. Secondly, I found the Ortegas sibling conflict to be a bit clumsy. Making him Ortegas's brother gives him a bit of immediate sincerity that a random journalist wouldn't have, but I'm not sure making them estranged did much. I'm not sure Ortegas is ever identified inside the documentary as his sister, which would make all her comments come off much more hostile than they normally would.
Still, I think it was a solid episode.