Amplification of electromagnetic fields by a rotating body

(I didn't understand the math in the paper)

Would this mean that a rotating body in space would eventually slow down? In other words, amplifying EM radiation draws energy from angular momentum?

There's a similar effect https://en.wikipedia.org/wiki/Yarkovsky_effect

On a wiki rabbit hole from that link to the Apophis asteroid, to rage and rage 2 video game plots.