EDIT:
Finally, it is absolutely a storytelling beat to tie her abilities visually to Palpatine’s abilities as they have been seen so far in the film.
The only thing is, Ascendant removed Palpy’s hands flickering when he raises the fleet. So it would be less a direct reference to Palps, and more a generic allusion to the Dark Side.
Huh. Was the reasoning to lessen the implication that Palps was raising an entire fleet through Force magic?