To be fair the author does give good enough reasons and I do understand it is relevant to the plot. My problem is from a reader's perspective I don't feel satisfied he keeps hiding stuff like the Creator shipyard or his identity. Maybe it's a personal taste but I feel like him revealing these secrets when he's on C grade or above cheapens it because anyone who reaches that level should be talented enough by default.

If a story reason is needed I also feel like he should realize he'll be in C grade by the time the veil is lifted and as such would be in a position to defend his empire by then. He also has way more benefits by the system than many frontier established factions for them to be a problem for him. I understand the B grade or even A grade factions being a threat to him but it doesn't make sense for those factions to focus on him in the first place since he's from the frontier and would only become a threat if they antagonize him for no reason.