Probably a good idea to learn about topics before guessing, really.

Compared to steam catapults, the EMALS also weighs less, is expected to cost less and require less maintenance, and can launch both heavier and lighter aircraft than a steam piston-driven system. It also reduces the carrier’s requirement of fresh water, thus reducing the demand for energy-intensive desalination.

…

The steam system is massive, inefficient (4–6% useful work), and hard to control

https://en.wikipedia.org/wiki/Electromagnetic_Aircraft_Launch_System

And the municipality doesn’t even own the camera. The Flock contracts are wild, and cities are dumb enough to sign them.