A little misleading. Yes if you drive your own passenger vehicle it is $15 below 60th Street. If you are in a Ride-Share then $2.50 will be added to the total you pay and if you are in a Yellow Taxi the meter will get $1.25 added to it.
No charge for those traveling FDR Drive, or West Side Highway but be careful if you exit any of those major roadways to enter a street within the newly designated area, you will be charged (if you take the West Side Highway up to 50th Street, for example, you will not be exempt from the payment).
So you could reach the Manhattan Cruise Terminal via Hugh Carey Tunnel and Westside Highway without paying the extra fee. Note that with Rider-Share/Car Service in NYC you cannot instruct on the route but with a Taxi you can, but will the driver listen 😉