People always ignore the hassle of TSA for flights. Adds lots of time, and the shorter the flight, the bigger percent of time spent on Pat-downs.
Trains you get right on. No extra time for examination and all that BS.
Who wants to stop? All the people going to those points. It doesn’t take long. Most stops are 3 minutes at a platform.
We buy TSA PRE and usually the TSA inspection takes less than 10 minutes. Especially at Spokane and San Jose that we use most frequently.