There is no evidence that a blunt body produces a shock wave in front of the vehicle, etc.
Except for all scientific tests in wind tunnels, etc, that do show that the blunt body produces a shock wave in front of the vehicle.
Yes, a blunt body changes the flow in front of it but increase the velocity and the density of the gas that contacts the blunt nose, the blunt nose is suddenly destroyed.
Rubbish! Go and learn above hypersonic gas flow.
The blunt nose does not "increase the velocity . . . of the gas that contacts the blunt nose"!
Where did you get that notion from?
The blunt nose result in the shock wave being well away from the surface with a stagnation region in between.
Here's some entertainment for you:
Heat Shields - Things Kerbal Space Program Doesn't Teach by Scott ManleyAny wind tunnel will confirm this basic experiment.
Nothing but useless empty words without evidence.
Don't bother posting any more crap till you have something to back up your claims!
Here read this again!
Atmospheric entry.
From that, a craft with a blunt nose shaped like part of a sphere is seen to be effective and can provide some lift and controllability during reentry.
The blunt nose keeps the shock wave well away from the craft greatly reducing that heat transfer - this compares a few shapes:

"These four shadowgraph images represent early re-entry vehicle concepts. A shadowgraph is a process that makes visible the disturbances that occur in a fluid flow at high velocity, in which light passing through a flowing fluid is refracted by the density gradients in the fluid resulting in bright and dark areas on a screen placed behind the fluid.
H. Julian Allen pioneered and developed the Blunt Body Theory which made possible the heat shield designs that were embodied in the Mercury, Gemini and Apollo space capsules, enabling astronauts to survive the firey re-entry into Earth's atmosphere.
A blunt body produces a shockwave in front of the vehicle--visible in the photo--that actually shields the vehicle from excessive heating. As a result, blunt body vehicles can stay cooler than pointy, low drag vehicles."