I walk up to the security checkpoint checkpoint, where I show the agent my phone. They see my boarding pass with the green checkmark and send me to the empty TSA Pre line.
I walk through the metal detector with no adjustments to my attire.
I am at the gate in 5 minutes.
I like how trains basically let you show up last minute, and a 3 hour train ride actually means a 3 hour train ride, compared to airport, checkpoints and boarding time, possibly waiting on the runway, and air time.
But you really just need to upgrade your travel accommodations to make your airport experience more seamless.