Better urban environments is a fight that's going to have to happen (and currently IS happening under Newsom) all along the HSR alignment, including LA and SF. Central valley cities tend to look like a bomb went off that decapitated any building taller than two stories, but that's something that can be changed with consistent effort over time, and I believe that it will. One of Newsom's top priorities right now is housing affordability and homelessness, and his administration's been fighting with (mostly bay area) NIMBY cities that are desperate to keep their densities low and their housing supply slim. YIMBY movements are starting to spring up all around California, and I've got hope that reforms to promote better, denser urbans are coming down the pipe. What's more is that CAHSR, in addition to several other bills, are helping to find more robust transit and transit oriented development across the state.

As-is, yes, travelling by public transit in central California blows ass. The only saving grace, really, is that CAHSR actually goes THROUGH the cities (for the most part, I think Visalia is the exception), so that you're automatically at your destination when you step off. This is compared to riding the San Joaquins, where it's a total crap shoot whether you'll get dumped in the middle of nowhere (Turlock, Modesto, Madera I think, probably a few others) or somewhere actually kind of useful. So, if our cities can get their shit together, and I think they can in time before the rail opens, then it could actually be a pretty nice experience.