flint edge can be sharper than surgical steel
I know that to be true for obsidian, I would be surprised if it was true for flint. It also has to be done by someone who seriously knows what they are doing. Not only making the edges correctly, but keeping the balance so the point will shoot straight.
Ghille suits help for stationary camo - they do not magically mask movement, which is how most of us (OK, maybe just me) get busted.