Amtrak banning photography on station platforms

This is not only preposterous, I'm convinced it's blatantly illegal, since Amtrak is a public entity, and therefore all station platforms are public property where photography is fully legal and protected. I have shot many pictures from platforms all over the country and never had any trouble. I'm fucking pissed off.

The guidelines specifically permit photography in "public access areas" on Amtrak property, which it defines as "[a]n area open to general public access and occupancy that is not otherwise posted or restricted by posted signs or locking devices." However, it specifically states that station platforms are for ticketed passengers only. For their part, ticketed passengers will be able to take photos from station platforms while preparing to board a train or immediately after getting off one.

Trains.com Article (Behind Paywall)