These are also not the first six pages since we've seen the first few pages.
Generally speaking, the protagonist is the first or one of the first people you see. We saw Superman in panel one. I also think that's an area where Moore flubbed Watchmen. He's spent decades appalled by people treating Rorschach as the protagonist but Moore gave most of the first issue and a lot of the driving action of the investigation to Rorschach.
That said, there seems to be a bit of a paperback novel thing going on here where you'll have protagonists helming their own plots.
My prediction right now is that this is a legacy Rorshach. A minor or new character spurred by Rorschach's papers. That said, the voice feels both topical to our current events and fairly on model, with a lot of memorable gems already. My feeling is that this will be a competent or even especially worthy sequel. Maybe it shouldn't exist but we're in a world of things that shouldn't be so what's one more if it's good?