Jahlad, why wouldn't a magnet bounce, where a spring would? (I'm talking in trigger terms here)
Both supply a return force to the trigger (and sometimes a "balance" or "pull-assisting*" force too *wrong terminology I'm sure, but you get what I mean?)
With Electro's, the general meaning for trigger bounce isn't that the trigger just bounces back and forth (although I've seen some that do). It's down to the kick of the marker firing, and the length of the trigger.
With an ultra-short trigger, the kick of the marker moves the marker back, unswitching the trigger, then gravity drops the marker back into your hands, and as your finger hasn't moved from the "just pulled trigger" position, it pulls the trigger again.
And anyways, magnets just feel funny