Yes, that is very true about the high speed train accidents. When they happen, the REALLY happen. It is unfortunate. But just like any other mode of transportation, there are risks.
I tend to think that travel by rail is not strongly embraced by the American society because of our love affair with the car. That may sound like some cheap line out of a documentary, but there is truth to it. Society here in Germany and Europe heavily relies on rail as a normal means of travel. I know I've been to the train station here dozens of times and been on one for of rail or another several times. Whereas in the US I don't even think I can tell you where the train station is in Baltimore or Washington. Let alone even consider it when the choice comes between my own car or flying.