It offers "too little" because of a GPU bottleneck. It's pretty apparent just how much faster it is happens when it's not.
As I said, for people looking at a CPU upgrade to play games that actually benefit from it, double digit gains from a 7800X3D even with a 4090 is nothing short of impressive IMO.
Overpriced? Sure for a 8 core chip it's terribly expensive, but the 7800X3D was roughly the same price and you get much faster productivity and even 5-15% bump in games. Considering the 7800X3D got gobbled up left, right and center AMD have no incentive to price it any less, more so now that the competition is much further away than they were before.