Earlier quoted context omitted.
There are also a lot of rather substantial engineering issues that have to be overcome in California that the train in China didn't have to consider. For example, the high speed train in California also has to cross notoriously rugged mountain ranges. The Diablo Range has a smattering of two-lane roads winding through it because it's so difficult to build through the gnarled hills. In the south, the Sierra Pelona and…
Switzerland tunneled through the alps for $12B. The issue isn't engineering. https://en.m.wikipedia.org/wiki/Gotthard_Base_Tunnel
People only shut their mouths when they get threatened into a fearful silence, and/or sometimes if they get bribed enough.
Otherwise, you'll always have a substantially sized group of complainers dragging down a project this big, and the complainers leech into operations and mysterious expensive mistakes erode the budget of an already expensive operation.
There's just enough shrug factor here for people to not care about how much gas they burn driving to places that might not be very exciting to begin with.
Many would just as soon not have to travel at all, and even more would prefer to not be taxed so as to pay for trips they personally don't want to take to begin with. Most people just want their actual lives to be generally easier.
Without confrontational intimidation, bribery is probably the only other political lever to press in the United States.