His ideas are naive. In a democracy we need to have voters on board, and voters are wooed by the sexy idea of an one hour train ride to LA. Construction is already underway. It took more than 10 years to get to this point.
And we are improving the outdated commuter train system along the way. It’s not like we are building 100% new tracks. HSR reusues existing system as much as possible. Caltrain gets electrification and new signal systems as a result.
To suggest we should just throw all this work away and start from scratch is idiotic.