They probably saw the 7600 selling decently and the 4060 Ti not selling at all, so they decided to put something up against the 7600.
And I do expect the 4060 to sell far better than the 4060 Ti, since it should effectively be a slightly cheaper 3060 8 GB with DLSS 3.
Is the 7600 actually selling well? That was panned almost as much as the 4060 Ti in reviews and I can't see too many NVidia customers jumping ship for AMD over a $270 7600. Even at $250 I think the card is overpriced and anything with 8 GB has a limited future.
DLSS3 is a non-factor on a 4060. Do you want a card that's going to generate fake frames from a low-res texture that the game engine swapped to because 8 GB of VRAM wasn't enough? Just smear Vaseline on your monitor and you won't be able to tell the difference.
The 4060 might look worse in a lot of benchmarks due to having less VRAM (8GB vs 12GB) and even though the clock speed is higher there's fewer CUDA cores (3072 vs 3584) so even casual buyers are going to look at a spec sheet and wonder why it has less.