the lightning effect isn't that deep. comics is a visual medium, it's just an aesthetic choice to show her powers in action which playing on the fact that she's part of the Black Lightning family of characters. it's not like DC's ever had her actually manipulating electricity or shooting lightning bolts. it's like when people were trynna complain about the Flash family having electricity in their aesthetics too; it's largely just used for superficial effect to add some visual excitement, it's not a big deal. doubly so here considering how rarely it's even used and how intangibly it's applied even when it is used.