If it is "to dampen vibrations" then obviously it isn't "fake". Vibrations are serious business; many bridges have collapsed due to vibrations, and many more (Millennium Bridge for example) have had severe trouble. Humans are particularly prone to causing vibrations because humans react to bridge movement in a way that amplifies the movement.
Technical description of the bridge from the engineering firm:
https://facilities.fiu.edu/projects/BT_904/MCM_FIGG_Proposal...
Page 3: "The stay cable pipes increase stiffness for pedestrian loads."
Page 18: "The stays and pylon provide the required structural design to meet the pedestrian loads for harmonic conditions of
natural frequencies"
Page 64: "HORIZONTAL FREQUENCY
In the lateral direction, the fundamental frequency of the
pedestrian bridge shall be greater than 1.3 hertz.
VERTICAL FREQUENCY
The fundamental frequency in a vertical mode shall be greater
than 3.0 hertz to avoid the first harmonic."
Page 65: "The pylon stiffness was designed
to provide significant benefit to the
overall stiffness of the structure."