> Allegedly.
Not allegedly, it's actually being built right now. 119 miles of it in fact. It's not the whole system, but it's the IOS that they promised that they would build.
> the target speeds are disappointing and there are so many detours from any meaningful corridor...
The target speed is 220 mph between Gilroy and Burbank which is in line with the current highest speed HSR systems in the world. The route actually makes a fair amount of sense given that the cities in the central valley are not that small, especially since the stations in those cities are designed for trains to express through them. Rather, it makes more sense compared to the I-5 corridor which would have required branch lines to be built, not to mention the other fundamental issues that proposal had.