Yes, Fritz, restrooms are not Amtrak's primary problem, but they're symptomatic of their problems.
MDOT keeps the airport restrooms clean. Yes, they don't have the inner city bums to worry about, but that's just another excuse.
Penn Station is an ambassador to our city and state and needs to present its best face for our visitors. Yes, presenting the best face for visitors is not Amtrak's primary problem either.
Pay toilets would not be a good image to give visitors - Baltimore: The City that nickels and dimes you to death (in addition to its murder rate).
Nor should we treat our indigents with that indignity either. Access to public toilets are a real amenity for them, since non-paying customers using restuarant and retail restrooms leads to further harassment.
All of which argues that MDOT would have much more reason to keep rest rooms clean than Amtrak does.
MDOT/MARC should take over all of the operation and maintenance of Penn Station from Amtrak. This should be another item to negotiate the next time they renew their operating agreement.
This is also symptomatic of other problems with Amtrak in the northeast corridor. Amtrak simply does not have the incentive or wherewithal (financial or otherwise) to raise northeast corridor rail service to the level it requires.
This is another argument for Amtrak being replaced by a regional authority comprised of MARC, SEPTA, NJT, MBTA, VRE, NYMTA, etc. in the northeast corridor.