Yes, to comply with paranoid hydrogen safety regulations cheaply. Also, note how the nitrogen is also being used to purge the entire line. Not just keep condensation away.
With more engineering work an intrinsically safe PTC heater could be certified and used just fine.
Unless the hydrogen fueling nozzle freezes to the car, which is apparently quite common in high humidity weather and/or when multiple cars are fueled consecutively. See e.g. https://www.sciencedirect.com/science/article/pii/S036031992...